Kids Mattress Upgrade Guide NZ: Size, Comfort & Support
If your child is waking up grumpy, restless, or complaining of a sore back, the culprit might be closer than you think, quite literally under them.
Most parents are quick to blame late nights or too much screen time, but an old or ill-fitting mattress can quietly rob kids of the deep, restorative sleep they need. In New Zealand, where winters bite, and kids burn serious energy throughout the day, quality sleep isn't a luxury; it's essential.
This guide covers everything you need to know about choosing the right mattress for kids in NZ, from size to support to budget.
Why Choosing the Right Kids Mattress Matters?
Children spend more time sleeping than adults. A school-age child needs 9 to 11 hours a night, which means the mattress they are on accounts for a third of their entire day. Poor support during those years does not just mean bad sleep. It can affect posture, concentration, and mood over time.
The good news is that finding the best mattress for kids does not require spending a fortune. It requires knowing what to look for.
What Size Mattress Does Your Child Actually Need?
This is where most parents either overthink it or get it wrong entirely. The answer is not just about how big your child is now. It is about how long the mattress will last before it needs replacing again.
Child's Age
Recommended Size
NZ Size (approx.)
Toddler (2-4)
Single / King Single
92 x 188cm
5-9 years
King Single or Double
107 x 203cm
10-14 years
Double / Full
138 x 188cm
Teens (15+)
Double or Queen
153 x 203cm
A kid's single mattress is the standard starting point for most households. If the budget allows and the bedroom has the space, sizing up to a king single or kids double mattress gives you another three to five years before the next upgrade. Kids grow faster than furniture budgets allow for.
Choosing the Right Type: Comfort and Support Explained
Not all mattresses support growing bodies the same way.
Children need firmer support than adults, particularly in the early years when spines are still developing. A mattress that feels luxuriously soft to a parent can actually put a child's lower back into a compromised position night after night.
A kid's memory foam mattress works well for children who move around a lot at night, as it absorbs motion and holds its shape. Just make sure it has a medium-firm rating rather than plush, which is too soft for most children under 10.
How to Choose a Mattress for a Child: The Checklist
Thinking about how to choose a mattress for a child, and not sure where to start?
Run through this before you buy:
Firmness: Medium-firm for most ages; avoid plush or ultra-soft ratings for children under 12
Size: Buy for the next 4 to 5 years, not just right now
Materials: Breathable covers matter in NZ's humidity swings between seasons
Certifications: Look for CertiPUR-US or OEKO-TEX certified foam if choosing a kids' memory foam mattress
Trial period: A reputable brand will offer at least 30 nights; 100 is better
Washable cover: Non-negotiable for younger children
A kids' bed and mattress package can be a cost-effective option, but check that the mattress itself meets support standards, not just the frame. Budget packages sometimes cut corners on the mattress to make the bundle price look attractive.
One Last Thing Before You Buy
Upgrading your child's mattress is not a complicated decision once you know the size they need, the support level that suits their age, and the bunk beds that hold up in a home. Match those three things, and you will not go far wrong.
The best full-size mattress for kids is the one that fits the room, fits the budget, and keeps them sleeping soundly through the night. That is the only spec that really counts.
Buying Guide · Mattresses · NZ Edition
Sizes, spring types, firmness, and what actually lasts in a Kiwi home. Plain answers from the TSB Living team, for buying online with confidence.
You'll spend a third of the next eight to ten years on this decision. Twenty minutes of reading is a fair trade.
If you only read one section
Buying a mattress? Get these four right.
Most people shop mattresses by price and a vague sense of "firm or soft". These four decisions, in this order, are what you'll actually live with. Use them as your checklist; the chapters below cover the rest, including the NZ-homes advice global reviews never do.
Size by the room, then the sleepers. A Queen (153 × 203 cm) needs walking space on both sides. Measure before you fall for a Super King.
Type by how you sleep. Side sleepers want a softer comfort layer (foam or Euro top). Back and stomach sleepers want firmer spring support.
Couples: springs that move independently. Pocket springs or foam absorb a partner's movement. Connected Bonnell coils pass it straight across.
Budget honestly. A kids' or spare bed is solved for under $300. Our most-bought adult Queens sit between $240 and $500. Above that you're buying comfort layers, not necessity.
Choosing a mattress comes down to three decisions, in order: the size your room can take, the construction that suits how you sleep, and the firmness your body needs. In New Zealand that means picking from the local size ladder (Single through Super King, including the King Single most countries don't have), then choosing between Bonnell spring, pocket spring, foam, and Euro top builds. For most Kiwi couples, a medium-firm Queen pocket spring or Euro top is the safe answer. For kids and spare rooms, a firmer single under $300 does the job well.
Buying online means you can't lie on the bed first, and that worries people more than it should. The specs tell you nearly everything once you know how to read them: coil type tells you about partner disturbance, comfort layers tell you about pressure relief, and firmness ratings only mean something relative to your weight and sleeping position. This guide translates each spec into a plain answer, grounded in what we actually stock and ship across New Zealand. Each chapter starts with its answer in the first line, so skim the bold text and you'll know enough to choose.
In this guide
Which mattress type is best? (Bonnell, pocket spring, foam, Euro top)3 min
Which TSB mattress range is right for you?2 min
What size mattress do I need? (NZ sizes explained)2 min
How firm should a mattress be?2 min
What works in NZ homes (damp, cold, and airflow)2 min
Which mattress should you buy? (Best for...)2 min
Making a mattress last1 min
What else you need: 6 things people forget1 min
Frequently asked questions2 min
The short answers
Best overall for couples
Euro Top Queen
From about $300
Best on a budget
Xclusive X20 pocket spring
From $155
Best for kids
Firm Single or Long Single
From $125
Best for hot sleepers
Gel memory foam (GEL30)
From $299
Chapter 01 Mattress Type
Which mattress type is best? (Bonnell, pocket spring, foam, Euro top.)
For most adult beds, a pocket spring or Euro top mattress is the best all-rounder; Bonnell spring is the budget workhorse; foam suits side sleepers and kids' rooms. The names describe what's inside, and what's inside decides how it feels, how it handles two sleepers, and how long it lasts.
Every mattress is a support core (springs or dense foam) with comfort layers on top. The four builds below cover nearly everything sold in New Zealand. None of them is "best"; each one is best for somebody.
The Four Mattress Builds
What's inside each mattress type
🛏️
Bonnell Spring
Connected Coils
Firm, durable and budget-friendly. The springs are linked together, providing solid support, though movement can travel across the mattress.
🌀
Pocket Spring
Independent Coils
Each spring moves independently for improved body contouring, targeted support and reduced partner disturbance during the night.
☁️
Foam & Gel
Layered Comfort
No springs inside. Multiple foam and gel layers provide excellent pressure relief, quieter sleep and cooler comfort.
✨
Euro Top
Spring + Plush Layer
A supportive spring core combined with a permanently stitched plush top layer for extra cushioning without sacrificing support.
💤
Biggest Mattress Range at TSB Living
The support core keeps your spine aligned, while the comfort layers determine how your mattress feels when you lie down. Choose the right support system for your sleeping position, then pick the comfort layer that matches your preferred feel.
Bonnell spring: the budget workhorse
Bonnell coils are connected in one lattice, which makes them cheap to build, firm underfoot, and very hard to wear out. The trade-off is that the whole surface moves together: roll over and your partner knows about it. For a kids' bed, a flat, a rental, or a spare room, Bonnell is the sensible money.
Pocket spring: support that moves one sleeper at a time
Each coil sits in its own fabric pocket and compresses independently. The mattress contours to shoulders and hips instead of bridging across them, and movement stays on its own side of the bed. If you share a bed, start here; our X20 range makes pocket springs the budget option too. For a deeper comparison, read our memory foam vs pocket spring guide.
Foam and gel: quiet, contouring, great for side sleepers
Foam mattresses have no springs to feel through, which makes them silent and forgiving on pressure points. Plain memory foam holds heat; gel-infused layers exist to offset that. Dense foam cores also make excellent firmer kids' mattresses. The thing foam will not give you is that springy push-back some sleepers miss.
Euro top: the comfortable middle of the market
A Euro top is a spring mattress with a thick cushion layer sewn flush under the cover, so you get spring support with a soft landing. It is the biggest part of our mattress range for a reason: it suits the widest spread of sleepers without committing you to full foam softness or bare spring firmness.
Latex: the natural option, when you can find it
Latex is springy, breathable, and long-lived, and it tends to cost more per centimetre of comfort. In our range it appears as a 30cm Euro top single. Worth considering for a single sleeper who runs hot and dislikes the memory-foam "sink" feeling.
Chapter 02 Our Ranges
Which TSB mattress range is right for you? (X20, Euro Top, GEL30, decoded.)
Our range names describe the build: X20 is the 20cm pocket spring, PIL20 Euro tops add the sewn cushion layer, GEL30 is a gel-infused memory foam Euro top, and Bonnell is the firm budget spring. Here is the whole catalogue translated into one honest table, so the product pages make sense before you open them.
Range
Build
Feel
Best for
From
Bonnell
Connected coil, 10–21cm depths
Firm
Kids, flats, spare rooms
$125
Xclusive X20
Pocket spring, 20cm profile
Medium
Budget all-rounder, first flat
$155
Euro Top PIL20
Spring + sewn pillow top
Medium
Couples, everyday adult beds
$209
Latex
30cm Euro top latex
Springy, breathable
Hot sleepers, foam-sink haters
$289
GEL30
Memory foam Euro top, gel-infused
Medium-soft contour
Side sleepers who run warm
$299
3 Way
Three foam layers, cool gel top
Layered foam contour
Foam comfort without springs
$319
Prices are starting points by size as at June 2026 and move with promotions; the product page is always the current truth. Two practical notes: some PIL20 listings bundle pillows (the title says so), and the X20, our single most-bought mattress, is a pocket spring at a Bonnell-like price, which is most of why it tops the sales chart.
What people actually buy · our best-selling mattresses
#1 best seller
Xclusive X20 Pocket Spring · Queen
$239 · 20cm profile
#2 best seller
Bonnell Bon21 · Queen
$314 · 3cm pillow top
#3 best seller
Bonnell Bon10 · Single
$125 · kids & spare rooms
Best-selling foam build
3 Way Mattress · Queen
$499 · cool gel top layer
Ranked by store sales. Prices checked 12 June 2026; current price and stock are always on the product page.
Chapter 03 Size
What size mattress do I need? (NZ sizes explained.)
For couples, Queen (153 × 203 cm) is the NZ default; for a single adult, King Single is the upgrade worth knowing about; for kids moving out of a cot, Single is standard. Sizes below are standard NZ dimensions; always check the listed dimensions on the product page, as they are the ground truth for the mattress you're buying.
The NZ Size Ladder
Every NZ size, drawn to the same scale
Single King Single Double Queen King Super King
Single
Kids' Rooms
91 × 188 cm
The standard first big-kid bed and bunk size. A Long Single (91 × 203 cm) adds 15cm for tall teens.
Same scale, honest proportions. Notice the length step: Single and Double stop at 188cm, everything from King Single up runs 203cm. Centimetres are standard NZ sizing; the product page dimensions are final.
The room decides before you do. Leave at least 60cm of walking space on each open side of the bed, and remember the mattress has to get there: stairwells and tight hall corners are where Super King ambitions go to die. If you're between sizes for a couple, take the bigger one; nobody has ever complained about too much bed width.
One NZ quirk worth knowing: Double and Single share the same 188cm length, while everything from King Single up runs 203cm. Taller than about 180cm? Stay in the 203cm club.
Two sizes off the standard ladder that we also stock: Baby Cot mattresses for the nursery stage (check your cot's internal dimensions before ordering, as cot sizing varies more than bed sizing), and California King, a longer, slightly narrower take on King that occasionally appears in our range for very tall sleepers. If a listing shows either, the product page dimensions are the ones to trust.
Buy the size the room can breathe around, not the biggest bed that technically fits.
TSB Living Team
Chapter 04 Firmness
How firm should a mattress be? (By sleeping position and weight.)
Side sleepers generally do best on medium to medium-soft; back sleepers on medium-firm; stomach sleepers on firm. Body weight shifts the answer: lighter sleepers sink less, so they should aim a step softer, and heavier sleepers a step firmer. "Firmness" has no universal scale, which is why position and weight beat marketing labels.
The goal is the same for everyone: a spine that stays in its natural line all night. Whatever your position, the test below is what good support looks like. For a deeper dive by position, read our guide to the best mattress for your sleeping position.
The Alignment Test
Three quick checks while lying in your normal sleeping position
1
Neck in Line
Your head shouldn't tilt up or sag down. If it does, the pillow is wrong before the mattress is.
2
Shoulder Sinks Slightly
On your side, the shoulder should settle into the comfort layer rather than prop you up. Pressure here means too firm.
3
Hips Level, Not Hammocked
Hips dipping below the line means too soft; hips perched above it means too firm. Level is the win.
✓ A good firmness match keeps your spine in a straight, natural line from your neck to your hips, without creating pressure points.
Two sleepers, two answers? Split the difference toward the lighter sleeper's preference (the heavier sleeper compresses any mattress more, effectively softening it for them), or pick a pocket spring or Euro top whose comfort layer does the personalising. Our couples' mattress guide covers the negotiation in detail.
Heavier and lighter sleepers: shift the scale
Firmness labels assume an average-weight sleeper, roughly 60 to 90kg. Outside that band, adjust deliberately. Lighter sleepers (under about 60kg) barely compress firm comfort layers, so a "medium" can behave like a board for them; aim a step softer than your position suggests. Heavier sleepers (over about 100kg) sink further into everything, so a step firmer restores the support the label promised, and a thicker mattress with a robust spring core will hold its shape for more years. Couples with a big weight difference get the most from pocket springs, where each side responds to its own occupant.
Chapter 05 NZ Homes
What works in NZ homes: damp, cold, and airflow.
In a typical NZ bedroom the mattress needs airflow underneath more than anything else. Cooler, damper rooms slow the overnight moisture every sleeper releases from drying out of the mattress. The fixes are structural and cheap: a slatted base or ventilated foundation, a weekly airing habit, and not parking the bed hard against a cold external wall.
This is the chapter global mattress reviews skip, because they assume centrally heated houses. Plenty of NZ bedrooms spend winter cold and a bit damp, and a mattress in that room lives a harder life.
Slats or solid base?
Slats win on airflow and are the default recommendation for NZ conditions; a solid or padded base gives a slightly firmer, more uniform feel but traps more moisture beneath the mattress. If you go solid, airing matters more. We've written a full comparison in bed base vs slats for NZ bedrooms; the short version is that either works if you manage airflow, and slats forgive laziness better.
Under the Mattress
Why slats are the NZ default
SLATTED
AIR MOVES
↑ ↑ ↑ ↑ ↑
Allows natural airflow beneath the mattress.
Helps moisture dry more quickly.
Popular in many New Zealand homes.
↔
SOLID
MOISTURE LINGERS
💧 💧 💧 💧
Provides full, continuous support.
Less airflow underneath the mattress.
Regular airing helps manage overnight moisture.
Every sleeper releases moisture overnight. Gaps between slats allow air to circulate and help the underside of the mattress dry naturally. With a solid base, airflow is more limited, so regularly standing the mattress on its side to air can help keep it fresh.
Foam in cold rooms
Memory foam firms up in the cold. In an unheated winter bedroom a foam mattress can feel a grade firmer than it did in the warm shop video you watched. It softens again with body heat within minutes; just don't judge it on the first cold-night impression.
Mattresses-in-a-box are normal now
Most foam and many spring mattresses ship compressed and rolled, which is why a Queen arrives at your door in a box a person can shift. Give it a few hours to take shape and a day or two to lose the new smell in a ventilated room. The full unboxing rundown is in mattress in a box, explained.
Editor's Note · NZ Winters
The cheapest mattress insurance in New Zealand is a habit: once a week, pull the duvet right back, open the window, and let the bed air for an hour. Moisture is the thing that ages a mattress fastest here, and an hour of airflow undoes a week of it.
Chapter 06 Which to Buy
Which mattress should you buy? (Best for your situation.)
Six situations cover most people reading this. Answer the three questions below for an instant pointer, or scroll the situations and find yours. Fall into two? Solve the bed you sleep in every night first.
60-second finder
Three questions, one starting point.
Who's the bed for?
Just me Two of us A kid Guests / the bach
How do you mostly sleep?
On my side On my back On my front All over the place
Budget feel?
Keep it lean Middle of the road Comfort first
See the full situation ↓ Shop the range →
Situation 01
Best for a first flat or a tight budget
A Bonnell spring (firm, connected coils) or the Xclusive X20 (a 20cm pocket spring, and our most-bought mattress) in the size your room takes. Durable and honest: nothing fancy, nothing to fail. This is the right money for a stage of life where the bed may move flats three times in two years.
Look for
Bonnell (firm) or X20 pocket spring
Price tier
Singles from about $125; most sizes under $300
Pick
Why this one
Price
X20 Pocket Spring · Single
Pocket springs at entry money
$155
X20 Pocket Spring · Queen
Our #1 selling mattress
$239
Bonnell Bon15 · Double
Firm flat-and-rental stalwart
$198
Skip the Bonnell if you share with a light sleeper; connected coils pass movement on. The X20's pocket springs handle sharing better.
Shop the X20 range →
Situation 02
Best for couples upgrading to a proper bed
A medium-firm Queen pocket spring or Euro top. Independent coils keep one sleeper's 3am roll from waking the other, and the Euro top's cushion layer settles most firm-vs-soft negotiations. This is the workhorse upgrade that ends the squeaky-old-Double era.
Look for
Pocket spring or Euro top, Queen, medium-firm
Price tier
Queens run $219 to $929; the most-bought sit $240 to $500
Pick
Why this one
Price
Euro Top PIL20 · Queen
The cushioned middle ground, pillows included
$319
Bonnell Bon21 · Queen
#2 seller; firmer, with 3cm pillow top
$314
3 Way · Queen
Layered foam with cool gel top
$499
Skip this if the bedroom is under 3 metres wide. A Double and side tables beats a Queen jammed wall to wall.
Shop Queen mattresses →
Situation 03
Best for kids and bunk beds
A firmer foam or Bonnell Single, or a Long Single if the height forecast looks tall. Kids don't need (or benefit from) plush adult comfort layers; they need consistent support and a price that doesn't sting when it meets a felt-tip pen. Our kids' mattress upgrade guide covers the cot-to-big-bed steps.
Look for
Firm support, Single or Long Single
Price tier
From about $125 to $330
Pick
Why this one
Price
Bonnell Bon10 · Single
The bunk-bed workhorse
$125
Euro Top PIL20 · Single
Step-up comfort, pillow included
$209
3 Way · Long Single
Foam comfort with growth room
$329
Skip the upgrade if the current mattress is still flat and supportive. Kids outgrow lengths, not mattresses.
Shop kids' mattresses →
Situation 04
Best for hot sleepers
A spring build (airflow through the coil layer beats solid foam) or a gel-infused foam if you want the contouring without the heat. Breathable cotton bedding does as much as the mattress does; the full cooling playbook is in our hot sleepers guide.
Look for
Pocket spring, or gel foam layers
Avoid
Thick plain memory foam if you already overheat
Pick
Why this one
Price
GEL30 Memory Foam · Long Single
Gel-infused foam Euro top
$299
Latex · Single
30cm breathable latex Euro top
$289
X20 Pocket Spring · Queen
Coil airflow on a budget
$239
Skip the worry if you only run hot in February. Summer bedding changes are cheaper than a mattress decision.
Shop all mattresses →
Situation 05
Best for the guest room or the bach
A mid-range Bonnell or Euro top Double or Queen. Guests need clean comfort for a weekend, not your forever mattress. At the bach, prioritise something that handles cold, damp months unattended: spring builds with a slatted base, aired out at the start of each stay.
Look for
Value spring build, easy to air
Price tier
Doubles from about $190
Pick
Why this one
Price
Bonnell Bon15 · Double
Value double for the spare room
$198
Bonnell Bon21 · Double
Pillow-top step up for regular guests
$272
Euro Top PIL20 · Double
Softer landing, pillows included
$279
Skip this if the "guest room" is really your office. A decent sofa bed serves twice-a-year guests fine.
Shop mattresses →
Situation 06
Best when you're starting from scratch
A bed and mattress combo. Moving to NZ, first home, or furnishing a rental: combos solve the frame, base, and mattress in one decision and one delivery, and the bundle pricing beats buying the pieces separately.
Look for
Frame + mattress bundle in your size
Why combo
One delivery, matched sizing, bundle saving
Pick
Why this one
Price
Jervis Frame + Bon21 · Queen
Frame and mattress, one delivery
$543
Aubrey Velvet Frame + 3 Way · Queen
The plusher pairing
$708
Wairoa Drawer Frame + 3 Way · Queen
Storage built into the base
$1,068
Skip this if you already own a good frame. Then you're just buying the mattress, and chapters 1 to 3 are your map.
Shop bed + mattress combos →
The best mattress is the one that suits how you actually sleep, not the one with the longest feature list.
TSB Living Team
Chapter 07 Care
Making a mattress last (the five-minute habits.)
Three habits decide whether a mattress lasts: rotate it, air it, and protect it. None takes more than five minutes, and together they're the difference between a mattress that's done at year five and one still going strong at year ten.
Rotate head-to-toe every couple of months for the first year, then seasonally, so body impressions spread evenly instead of digging two permanent hollows. (Modern one-sided mattresses rotate; they don't flip.) Air the bed weekly as covered in chapter 5. And put a washable protector on from day one: sweat and spills age foam and fabric faster than use does, and a protector is the cheapest part of the whole setup to replace.
The Ownership Timeline
A decade of mattress, five minutes at a time
🛡️
DAY 1
Protector On
Start protecting your mattress from spills, dust and everyday wear.
🔄
YEAR 1
Rotate Every 2–3 Months
Build a simple rotation routine to encourage even comfort and support.
🌤️
YEARS 2–7
Seasonal Rotate
Rotate with the seasons and air the mattress regularly to help keep it fresh.
🔍
YEAR 5
Mid-Life Sag Check
Check for body impressions and confirm your mattress is still providing the support you need.
🛏️
YEARS 8–10
Replacement Window
Many quality mattresses reach the point where replacement becomes worth considering.
The habits are front-loaded. A protector on day one and a regular rotation routine during the first year help set up the quieter middle years. Continue seasonal rotation and airing throughout ownership, and by years 8–10 it's worth assessing whether your mattress still provides the comfort and support you expect.
When a mattress does reach the end (visible sag that airing and rotating don't fix, springs you can feel, or waking sore in a bed that used to be fine), replace it rather than nursing it. And when you move house, move it properly: our guide to moving and storing a mattress saves more mattresses than any care tip here.
Chapter 08 Complete the Bed
What else you need: 6 things people forget.
The mattress is half the bed. These six finish the job, and most of them get remembered a fortnight after the mattress arrives.
01
Bed base
The right base adds years to a mattress. Slatted bases win on airflow in NZ rooms; whatever you choose, match it to the mattress size exactly.
Shop bed bases →
02
Bed frame
Gets the mattress off the floor and the airflow underneath it. Check the frame's slat spacing suits your mattress type before buying.
Shop bed frames →
03
Pillows
The neck's share of spinal alignment. Side sleepers need a higher loft than back sleepers; replace pillows long before you replace the mattress.
Shop pillows →
04
Bedding
Breathable layers do half the temperature work. Cotton sheets for hot sleepers, layered duvets for cold rooms, and a washable protector under it all.
Shop bedding →
05
Complete beds
If the frame is as tired as the mattress, replacing both at once gets the sizing guaranteed-matched and usually costs less than two separate decisions.
Shop beds →
06
Tallboy
Spare bedding needs a dry home; linen stored damp defeats every airing habit. A tallboy keeps the winter layers ready without eating floor space.
Shop tallboys →
Chapter 09 FAQ
Quick answers to the questions customers ask us most.
What size mattress should a couple get in NZ?
Queen (153 × 203 cm) is the NZ standard for couples and fits most main bedrooms with room to walk. Upgrade to King or Super King only if the room is 3.5 metres wide or more. A Double suits couples only in genuinely small rooms; it's snug for two adults.
What's the difference between Bonnell and pocket springs?
Bonnell coils are wired together, so the surface moves as one and costs less; pocket springs sit in individual fabric pockets, so each coil compresses alone. Pocket springs contour better and stop a partner's movement travelling across the bed. Bonnell remains the durable budget choice for kids and spare rooms.
Is memory foam too hot to sleep on?
Plain memory foam holds more heat than springs because air can't circulate through it. Gel-infused foam layers and breathable covers offset most of that, and spring-plus-foam hybrids like Euro tops split the difference. If you already run hot, choose a spring build or gel foam and use cotton bedding.
What firmness should I choose?
Match it to your sleeping position first: side sleepers suit medium to medium-soft, back sleepers medium-firm, stomach sleepers firm. Then adjust for weight, softer if you're lighter, firmer if you're heavier. The test that matters: lying in your normal position, your spine should stay in a straight, natural line.
How much should I spend on a mattress in NZ?
In our range, kids' and spare-room singles start at about $125. Everyday adult Queens run from about $220 to $930, with the most-bought models between $240 and $500, and the very top reaches about $1,080. Spend at the level the bed gets used: nightly adult beds deserve the middle tier.
How long does a mattress last?
A quality mattress used nightly is typically good for eight to ten years; budget builds and guest beds vary either side of that. Replace when you see sag that rotating doesn't fix, feel individual springs, or consistently wake sore. Rotating, airing, and a washable protector stretch the lifespan meaningfully.
Do I need a bed base, or do slats work?
Either works when matched to the mattress, but slats are the better default in NZ bedrooms because they ventilate the underside, which fights our damp winters. Keep slat gaps modest so foam mattresses stay supported evenly. A solid base feels slightly firmer and needs a more disciplined airing habit.
What size is a King Single, and who is it for?
A King Single is 107 × 203 cm: wider and 15 cm longer than a standard Single. It's the best single-sleeper size in NZ, ideal for teenagers, tall adults, and guest rooms that host one person. If a kid's room has the space, it's the upgrade that lasts through high school.
Does body weight change which mattress I should buy?
Yes. Firmness labels assume an average-weight sleeper, roughly 60 to 90kg. Lighter sleepers compress less, so choose a step softer than your position suggests; heavier sleepers should go a step firmer, with a thicker spring core for durability. Couples with a big weight difference do best on pocket springs.
Keep exploring Related guides
More from the TSB Living team.
The mattress cluster, one read at a time.
01
Memory Foam vs Pocket Spring
The two big builds, compared properly: feel, heat, movement, and lifespan.
Read guide →
02
Best Mattress by Sleeping Position
Side, back, stomach, or all three: what each position needs underneath it.
Read guide →
03
Mattress in a Box, Explained
How compressed shipping works, unboxing right, and when the smell goes away.
Read guide →
04
Best Mattresses for Hot Sleepers
Builds, layers, and bedding that keep the bed cool through an NZ summer.
Read guide →
05
Bed Base vs Slats
What goes under the mattress matters in NZ rooms. Airflow, feel, and lifespan.
Read guide →
06
Hypoallergenic Mattress Guide
Materials, covers, and habits for allergy-prone sleepers and dusty rooms.
Read guide →
Sleep problems are one of the most common complaints among adults over 60, and yet the mattress rarely gets the blame it deserves. Aching joints, restless nights, waking at 3 am for no clear reason, these things are often brushed off as just part of getting older. Sometimes they are. But a mattress that's sagging in the middle, too firm for ageing joints, or trapping heat all night is going to make every one of those problems worse. If you're shopping for yourself or trying to find something better for a parent, this guide will help you cut through the noise and make a decision that actually improves sleep.
Common Sleep Challenges for Elderly People
It helps to start with the specific problems, because the right mattress addresses different needs for different people.
Sleep Challenge
How It Affects Sleep
Arthritis
Inflamed joints need cushioning. A mattress that pushes back too hard against the hips, shoulders, or knees will cause pain throughout the night.
Back pain
Ageing spines need consistent support. Without it, muscles overcompensate, and you wake up stiff and sore.
Hip pain
Side sleepers take the brunt of this. A mattress that's too firm puts direct pressure on the hip joint with nowhere for it to go.
Poor circulation
Pressure points on a too-firm surface restrict blood flow. That pins-and-needles feeling at night is often the mattress, not a health issue.
Night sweats
Temperature regulation becomes less efficient with age. A mattress that traps heat makes this significantly worse.
What Makes the Best Mattress for Seniors?
Not every mattress brand talks about these features plainly, so here's what actually matters and why.
Pressure Relief
This is the big one. Pressure relief means the mattress gives way where the body is heaviest, hips, shoulders, and lower back, so those areas aren't grinding against a hard surface all night. For anyone with arthritis or joint pain, this isn't a luxury feature. It's essential.
Proper Spinal Alignment
Too soft and the spine sags. Too firm and it can't follow its natural curve. Neither is good. What you want is a mattress that supports the spine in a neutral position so the back muscles can actually relax overnight instead of working to compensate.
Strong Edge Support
This matters far more for older sleepers than younger ones. If the edges compress when you sit on them, getting up becomes awkward and unstable. Good edge support gives you a firm, reliable surface to push off from and also means you can use the full width of the mattress without feeling like you might roll off.
Temperature Regulation
Older adults tend to sleep warmer, and a mattress that traps body heat compounds the problem. Materials like pocket springs, latex, and open-cell foam allow air to move through the mattress and keep the sleep surface cooler.
Durability
A mattress that starts sagging after three years defeats the purpose. For elderly sleepers especially, a mattress that loses its support over time gradually undoes all the benefits you bought it for.
Which Mattress Type is Best for Elderly People?
Pocket Spring Mattress
Each coil moves on its own, so when your hip sinks in, your shoulder doesn't have to follow. That independence is what makes them good for people who carry their weight unevenly or sleep in one position all night.
Pros: Great spinal support, breathable, easy to move on, built to last
Cons: Can feel too firm if the comfort layer is thin, not great at absorbing a partner's movement
Best for: Seniors who tend to sleep hot, need reliable back support, or have always preferred a traditional spring mattress
Memory Foam Mattress
Memory foam wraps around you rather than pushing back. That might sound like a good thing, and for painful joints, it often is, but it also means you can feel a bit stuck when you try to roll over.
Pros: Takes pressure off sore joints, barely transfers movement, good for hip and shoulder pain
Cons: Holds onto heat, responds slowly, so turning over takes more effort, can feel low and hard to get out of
Best for: Seniors whose main issue is joint pain and who don't run hot at night
Latex Mattress
Latex gives you the cushioning of foam without the stuck-in-quicksand feeling. It pushes back a little, which makes moving around at night much easier, and it doesn't trap heat the way dense foam does.
Pros: Breathable, easy to move on, very durable, naturally hypoallergenic
Cons: Heavy, harder to handle, more expensive, not suitable for those with latex allergies
Best for: Seniors who want pressure relief without the sinking feeling of foam, and who sleep warm
Hybrid Mattress
A coil base topped with foam or latex comfort layers. Covers more ground than any single-material mattress.
Pros: Good balance of support and cushioning, breathable, strong edges, works for most sleep positions
Cons: Pricier, quality varies considerably between brands
Best for: Most elderly sleepers. If you're not sure what to get, a good hybrid is usually the safest choice.
Bonnell Spring Mattress
The traditional interconnected spring design. Still widely available and the most affordable option.
Pros: Budget-friendly, firm, good airflow
Cons: Springs are linked, so movement transfers across the whole mattress, less pressure relief, can squeak and sag over time
Best for: Seniors on a tight budget who sleep alone and prefer a firmer surface
Better Sleep Starts With the Right Choice
The right mattress won't fix everything, but it removes one of the most correctable barriers to good sleep. Once support, pressure relief, and temperature are sorted, a lot of other sleep problems improve on their own.
One practical thing worth checking before you buy: mattress height. For elderly sleepers, somewhere between 25 and 35 cm works best. High enough to sit down and stand up without strain, but not so high that getting into bed becomes its own challenge. Pair it with the right bed base and make sure the combined height works for the person using it.
Not sure where to start? TSB Living has a range of mattresses suited to the needs of older people, across different budgets and sleep types. Come in and talk to us, or browse the range of bedroom and living room furniture online. Better sleep is worth getting right.
What if the mattress you've been sleeping on is the reason you wake up tired? Most people blame their schedule, their stress, or the neighbor's dog. Rarely do they look at the thing they're lying on for eight hours a night. Mattress firmness has a direct impact on spinal alignment, pressure relief, and how rested you feel come morning. Getting it wrong is easy. Getting it right, once you know what to look for, is straightforward. Here's what you actually need to know before you buy.
What Does Mattress Firmness Actually Mean?
Mattress firmness refers to how soft or hard the surface feels the moment you lie down. It is the initial resistance your body experiences, not how well the mattress supports your spine over the course of the night. That distinction matters more than most people realize.
There is no universal industry standard for the mattress firmness scale. One brand's "medium" might feel like another brand's "firm." Most manufacturers use a scale from 1 to 10, where 1 is the plushest and 10 is the hardest. Terms like "luxury plush," "cushion firm," or "ultra firm" are marketing labels, and they vary widely between brands.
What you should focus on instead is how a mattress interacts with your specific body weight, sleeping position, and physical needs. Firmness is personal. That is where the real decision lies.
Soft vs Medium vs Firm Mattress Comparison
Feature
Soft (1-3)
Medium (4-6)
Firm (7-10)
Surface Feel
Plush, deep sink
Balanced give and support
Minimal sink, rigid surface
Best For
Side sleepers, lightweight bodies
Combination sleepers, couples
Stomach sleepers, heavier bodies
Pressure Relief
High
Moderate
Low
Spinal Support
Depends on the base layer
Good for most
Excellent for back/stomach
Motion Transfer
Higher
Moderate
Lower
Durability
Can soften faster
Stable over time
Longest lasting feel
Which Mattress Firmness Is Best for Your Sleeping Position?
Here is the most practical question to ask yourself before shopping: What position do you spend most of the night in? Your sleep position places pressure on specific areas of your body, and the right firmness should relieve that pressure without letting your spine fall out of alignment.
Side sleepers tend to do best on soft to medium mattresses. In this position, the shoulders and hips take the brunt of your body weight. If the mattress is too firm to allow any give at those points, pressure builds up fast, and you'll feel it by morning.
Back sleepers typically benefit from medium to medium-firm mattresses. Body weight spreads out more evenly in this position, which takes some pressure off the mattress. That said, the lower back still needs enough support to stay in its natural curve rather than flattening against the surface.
Stomach sleepers generally require a firm mattress. When the hips sink too far into a soft surface, the lower back arches unnaturally, and pain follows quickly.
Mattress Materials and How They Affect Firmness
Material
How It Affects Firmness
Memory Foam
Tends to feel progressively softer the longer you lie on it; a rated medium can feel like a soft within minutes
Latex
Feels firmer in practice than its rating suggests; holds its shape rather than conforming deeply
Innerspring
Coil count and gauge directly determine firmness; they can feel inconsistent across the surface
Hybrid
Offers better pressure relief than pure innerspring while maintaining stronger support than all-foam
Signs Your Mattress Is Too Soft
A mattress that is too soft might seem like a luxury at first, but the signs of a poor fit show up fast.
You wake up with lower back pain or stiffness that eases after you get up and move around.
Your hips sink deeper than your shoulders, causing your spine to curve downward.
Changing positions takes real effort. You feel like you are working against the mattress rather than moving freely.
Visible sagging or a body impression that stays even after you get up is a clear sign the material has broken down.
Sleeping hot is common when you sink too deep into a firm memory foam mattress, as the material surrounds your body and traps heat through the night.
Signs Your Mattress Is Too Firm
On the opposite end, a mattress that is too hard creates a different set of problems.
You wake up with pain or numbness in the shoulders, hips, or knees, particularly if you are a side sleeper.
A gap under your lower back when lying flat means the mattress is not following the curve of your spine. That unsupported space leads to tension and aching over time.
Frequent position changes through the night usually mean your body is searching for relief it is not finding.
The mattress feels like it is working against your body shape rather than accommodating it. There is no real give at the contact points.
You feel unrested in the morning despite getting enough hours of sleep.
Medium Firm Mattresses: Why They're the Most Popular Choice
Walk into any mattress store, and medium firm is the firmness level most people end up leaving with. That is not a coincidence. Rated roughly 5 to 6 out of 10, medium firm hits a balance that works across a wider range of body types and sleep positions than soft or firm can manage on their own. There is enough give at the surface to take pressure off the shoulders and hips, and enough resistance underneath to keep the spine from dropping out of alignment.
It is also the safest compromise for couples who have different sleeping positions or moderate weight differences. Rather than one person getting exactly what they need and the other settling, a medium-firm queen mattress tends to work reasonably well for both.
At TSB Living, we carry a curated range of mattresses across all firmness levels. Browse our collection and filter by firmness to find the right match for your sleep style.
Most mattress advice in New Zealand starts with firmness. Soft, medium, or firm. But firmness is a surface-level detail. What actually determines how a mattress performs night after night is the spring system underneath. Bonnell springs and pocket springs are built on entirely different principles, and that difference ripples through everything from spinal support to how much you feel your partner roll over at 2 am. If you have been choosing mattresses based on how they feel in a showroom, you may have been missing the bigger picture entirely. Here is what to look for instead.
What Is a Bonnell Spring Mattress?
A Bonnell spring mattress is built around a network of hourglass-shaped metal coils, wider at the top and bottom and narrower through the middle. Bonnell spring mattresses use hourglass-shaped metal coils connected by a wire frame, forming one spring unit that works together. The shape of each coil is wider at the top and bottom and narrower through the middle. Key features:
Hourglass coils that give a firm, springy feel
A long-standing innerspring design used across homes for decades
Weight spreads across the surface through the linked coil network
Firm and bouncy underfoot, a feel many sleepers actively prefer
Good airflow through the open coil structure, cooler than most foam options
Think of it like a trampoline. When one area compresses, the movement ripples across the whole surface. That's a useful image for understanding both the bounce and the motion transfer that comes with a Bonnell design.
What Is a Pocket Spring Mattress?
A pocket spring mattress takes a fundamentally different approach. Instead of joining all the springs together, each coil is wrapped individually in its own fabric pocket. The springs stand side by side but operate independently.
Key characteristics include:
Each spring is individually wrapped and responds only to the pressure placed directly on it
The mattress adapts to your body's shape rather than pushing back with equal force across the surface
Shoulders, hips, and lower back receive more tailored cushioning
Spinal alignment is better maintained because the mattress responds to varying pressure levels across your body
Movement in one area stays contained, so a restless partner is far less likely to disturb your side of the bed. That's the key advantage, particularly for couples.
Bonnell Spring vs Pocket Spring Mattress: Side-by-Side Comparison
Feature
Bonnell Spring
Pocket Spring
Coil Design
Interconnected hourglass coils
Individually wrapped coils
Feel
Firm and bouncy
Adaptive and contouring
Motion Transfer
Higher
Lower
Pressure Relief
Basic
Better
Spinal Support
Even but less precise
More targeted
Partner Disturbance
More noticeable
Minimal
Airflow
Excellent
Good
Durability
Moderate
Good to very good
Construction and Coil Design
Bonnell coils are tied together with helical wires, creating a unified support layer. Pocket springs are individually encased, so the coil count and casing quality matter significantly. A higher pocket spring count generally means finer, more precise support.
Comfort and Pressure Relief
Pocket springs win here. Because each coil moves independently, pocket springs cushion pressure points like the hips and shoulders without letting the body sink unevenly. Bonnell springs distribute weight more uniformly across the surface but offer less targeted relief at key contact points.
Support and Spinal Alignment
A pocket spring mattress follows the natural curve of your spine more closely than a Bonnell system does. Bonnell mattresses provide solid, consistent support but may feel too firm or too flat for sleepers who need more give in specific areas.
Motion Isolation
This is where the two diverge most sharply. Bonnell springs are connected, so movement travels across the whole surface. Pocket springs contain movement to the area where it occurs, making them far better for people who share a bed.
Durability and Lifespan
A well-made pocket spring mattress tends to hold its shape longer because the springs bear load individually rather than as a unit. Bonnell queen-size mattress can develop uneven wear when certain coils carry more weight over time. That said, build quality, foam layers, and the base underneath all play a role in how long either mattress lasts.
Temperature Regulation and Breathability
Spring mattresses generally sleep cooler than foam because air moves through the coil layer rather than getting trapped. Bonnell mattresses have an open coil structure that allows particularly good airflow. A pocket spring king-size mattress also stays cool, more so when the cover fabric is breathable or there is a light comfort layer on top. For anyone who runs warm at night, the cover material and top layers deserve just as much attention as the spring type itself.
Which Mattress Is Best for Different Sleepers?
Sleeper Type
Best Choice
Why
Side Sleepers
Pocket Spring
Conforms to the curve of the hips and shoulders, relieving pressure at key contact points
Back Sleepers
Either (lean Bonnell)
Bonnell's even, firm surface supports the natural curve of the lower back well; pocket spring works too if you prefer a softer feel
Stomach Sleepers
Bonnell Spring
The firmer, flatter surface prevents the hips from sinking too deep, keeping the spine in a safer position
Combination Sleepers
Pocket Spring
Independent coils adjust quickly as you shift positions throughout the night
Couples
Pocket Spring
Significantly reduces motion transfer so one partner's movement does not disturb the other
Children
Bonnell Spring
Durable, affordable, and firm enough to support growing bodies during lighter use
Guest Rooms
Bonnell Spring
Cost-effective for occasional use where advanced support features are not a priority
How to Choose Between a Bonnell and Pocket Spring Mattress?
Ask yourself these questions before deciding on a Bonnell Spring vs. a Pocket Spring Mattress:
Who will sleep on it? If it's a couple, lean toward a pocket spring. If it's a single sleeper, guest, or child, Bonnell may serve just as well.
How often will it be used? Daily sleepers benefit from the better support and durability of the pocket spring. Guest rooms can get by comfortably on Bonnell.
What is your sleep position? Side sleepers need the pressure relief of a pocket spring. Back and stomach sleepers may actually prefer the firmer feel of Bonnell.
What is your budget? If cost is a key factor, Bonell delivers solid value for light-to-moderate use.
Are you a hot sleeper? Both spring types offer decent airflow, but check the foam and cover layers for additional breathability.
Looking for a spring mattress that suits the New Zealand climate and your sleep needs? TSB Living has mattress and bed and mattress options across sizes, firmness levels, and budgets. Walk in, and our team will help you find the right one.
