The best mattress topper in NZ overall is the Ecosa Plush Mattress Topper, thanks to its body-contouring HD G-7 memory foam, washable Tencel-blend cover and strong motion isolation. A good topper is the cheapest way to soften a too-firm bed, add pressure relief or buy a tired mattress another year or two before you replace it. This guide ranks nine toppers sold in New Zealand across memory foam, cool gel, bamboo charcoal and pillow-top builds, with an honest look at depth, cooling, covers and who each one suits.
For guest rooms and sofa sleepers, a topper pairs well with our guides to air mattresses and sofa beds, and if you sleep cold in winter an electric blanket works alongside a topper. Prices change often, so check the current deal on each retailer page.
Quick comparison
| # | Topper | Best for | Type & thickness | Cover |
|---|---|---|---|---|
| 1 | Ecosa Plush Mattress Topper | Best overall | Memory foam, 5 cm | Tencel-blend, washable |
| 2 | TSB Living 8cm Dual | Couples | Dual gel + foam, 8 cm | Bamboo, washable |
| 3 | TSB Living 8cm Blue | Budget memory foam | Memory foam, 8 cm | Bamboo zip, washable |
| 4 | TSB Living Bamboo Charcoal | Plush pillow-top | Microfibre, 5 cm | 400TC, washable |
| 5 | TSB Living Polyester | Cheap soft cushioning | Microfibre, 5 cm | Cotton blend |
| 6 | Giselle Egg Crate | Budget pressure relief | Egg-crate foam, 5 cm | None (bare foam) |
| 7 | Giselle Cool Gel | Cooling for singles | Gel memory foam, 8 cm | Bamboo zip, washable |
| 8 | Giselle Double-Sided Pillowtop | Reversible seasonal | Hollow-fibre, 5 cm | Reversible, washable |
| 9 | Giselle 7-Zone | Zoned support / back pain | 7-zone foam, 8 cm | Bamboo zip, washable |
1. Ecosa Plush Mattress Topper – Best Overall
The best mattress topper in NZ overall is the Ecosa Plush Mattress Topper, thanks to its body-contouring HD G-7 memory foam, washable Tencel-blend cover and strong motion isolation. This 5 cm single layer softens a too-firm or ageing mattress without sleeping like a dense slab. Testers found it noticeably changed the feel of a firm bed, landing around a soft 5.5 out of 10 for firmness, with Ecosa claiming it shifts a mattress about two comfort levels.
The CertiPUR-US certified foam is perforated with pincore holes for airflow, and the removable zippered cover blends Tencel, marine-recycled yarn and polyester into a double-knit fabric reviewers call strong and breathable. Elasticated corner straps and a grippy base keep it in place, and Ecosa says partner-movement disturbance drops by about 50 percent. It runs from Single (92 x 188 cm) to California King (203 x 203 cm); the Queen is 153 x 203 x 5 cm and around 10.6 kg.
Pros
- Softens a firm mattress by roughly two comfort levels
- Strong, breathable, machine-washable Tencel-blend zip cover
- Good motion isolation for couples
- Wide size range including Long Single and California King
Cons
- No sleep trial – the 100-night trial covers only Ecosa mattresses and pillows, so the topper carries a 5-year warranty only
- Some hot sleepers report it still sleeps warm
- Mild new-foam smell on unboxing that airs out within hours
Key specs: 5 cm HD G-7 memory foam; removable Tencel-blend zip cover; CertiPUR-US certified; sizes Single to California King; 5-year warranty; model Ecosa Plush Mattress Topper.
2. TSB Living Memory Foam Topper 8cm Dual – Best for Couples
Couples who want depth and cooler nights are best served by the TSB Living Memory Foam Topper 8cm Dual, a two-layer build that pairs a cool gel memory foam top with a high-density support base. The Super King measures 203 x 183 x 8 cm, with Double, Queen, King Single and Single also offered, and the 8 cm depth gives heavier sleepers more to sink into than the thinner pillow-top options.
The gel top contours to the body while the firmer base resists bottoming out, and TSB Living says the design minimises motion transfer so one partner moving does not wake the other. A soft, removable bamboo cover is machine washable, an anti-skid base stops it shifting, and the breathable cover plus gel foam keep airflow moving. On-site shoppers rate it five stars across six reviews.
Pros
- Dual gel-foam-over-support-base layering for couples
- Generous 8 cm depth
- Removable bamboo cover, machine washable
- Anti-skid base reduces sliding
Cons
- Warranty term not stated on the listing
- Gel cooling is heat-delay rather than active cooling
- Stock can be thin in some branches (Christchurch out at the time of writing)
Key specs: 8 cm dual-layer (cool gel memory foam top + high-density base); removable bamboo cover; anti-skid base; Super King 203 x 183 x 8 cm; model PR66635.
3. TSB Living Memory Foam Topper 8cm Blue – Best Budget Memory Foam
For a straightforward, lower-cost memory foam upgrade, the TSB Living Memory Foam Topper 8cm Blue is the value pick. It is a single layer of 8 cm high-density memory foam that contours to the body for pressure relief and spreads weight evenly, and the Super King comes in at 203 x 183 x 8 cm with sizes down to Single.
A ventilated foam design improves airflow, the foam folds for storage or transport, and an anti-skid base keeps it stable on the mattress. The removable zippered bamboo cover is machine washable, which makes upkeep easy. It is the most affordable way into a genuine 8 cm memory foam topper in this list, though it lacks the dedicated gel layer of the Dual model above.
Pros
- Full 8 cm of high-density memory foam at a budget level
- Removable zippered bamboo cover, machine washable
- Foldable and portable with an anti-skid base
- Ventilated foam for better airflow
Cons
- Single layer, so no separate cooling-gel layer like the Dual
- Warranty term not stated
- Only two on-site reviews, so a small feedback sample
Key specs: 8 cm high-density memory foam; ventilated; removable zippered bamboo cover; foldable; anti-skid base; Super King 203 x 183 x 8 cm; model PR66633.
4. TSB Living Bamboo Charcoal Topper – Best Plush Pillow-Top
Sleepers who want cloud-soft plushness rather than dense foam should look at the TSB Living Bamboo Charcoal Topper. It is a 5 cm pillow-top filled with 1000GSM bamboo charcoal microfibre under a smooth 400-thread-count fabric with square-pattern stitching that keeps the fill evenly spread. The King measures 203 x 167 x 5 cm, with Single through Queen also available.
A fully fitted deep-pocket elastic skirt grips mattresses up to 45 cm thick, and the bamboo charcoal fill is marketed as anti-bacterial and dust-mite resistant, which suits allergy-prone sleepers. It is machine washable on a warm cycle. The trade-off against memory foam is support: a fibre pad cushions the surface but does not contour or relieve pressure points the way foam does, and fibre fills tend to flatten over time.
Pros
- Plush 1000GSM pillow-top feel
- Anti-bacterial and dust-mite resistant for allergy sufferers
- Deep-pocket elastic skirt fits mattresses up to 45 cm
- Machine washable
Cons
- Fibre fill compresses and flattens over time
- Less contouring and pressure relief than memory foam
- Warranty term not stated
Key specs: 5 cm pillow-top; 1000GSM bamboo charcoal microfibre fill; 400-thread-count cover; fits mattresses up to 45 cm; King 203 x 167 x 5 cm; model PR8434.
5. TSB Living Pillow Top Polyester Topper – Best Cheap Soft Cushioning
The TSB Living Pillow Top Polyester Topper is the cheapest way to add soft cushioning and freshen a firm or tired mattress. It uses an 850GSM memory-resistant microfibre fill in a 5 cm pillow-top, with a King size of 203 x 167 x 5 cm and options up to Super King.
A fully fitted elastic skirt secures it on mattresses up to 45 cm deep, and the lofty microfibre gives a balanced soft-but-supportive surface that breathes well. It washes on a warm machine cycle but must be line dried. As the lowest-density topper here, it is the least durable and supportive of the group, and the product page describes the cover inconsistently as both cotton and a cotton-polyester blend, so expect a blended fabric.
Pros
- Lowest-cost way to add plush softness
- Lightweight with an elastic skirt fitting up to 45 cm
- Breathable microfibre fill
- Eight five-star on-site reviews
Cons
- Lowest density here (850GSM), so least durable and supportive
- Line dry only
- Cover material described inconsistently; warranty term not stated
Key specs: 5 cm pillow-top; 850GSM memory-resistant microfibre; cotton-polyester blend cover; fits mattresses up to 45 cm; King 203 x 167 x 5 cm; model PR1151.
6. Giselle Egg Crate Memory Foam Topper – Best Budget Pressure Relief
The Giselle Egg Crate Memory Foam Topper is the budget pick for adding pressure relief to an overly firm bed. The King Single measures 203 x 107 x 5 cm, and its moulded egg-crate surface is the whole point: the peaks compress under heavier body zones to spread weight, while the valleys open air channels that help cut heat build-up compared with a flat foam slab.
It is 100 percent high-density foam, marketed as anti-bacterial and dust-mite resistant, and ships vacuum-packed to expand once unrolled. There is no removable cover, so it is designed to sit under a fitted sheet. That keeps the price low but means there is nothing zip-off to wash, and like many bagged foam toppers it can carry an off-gassing smell that needs a few days to air out.
Pros
- Egg-crate profile targets pressure points cheaply
- Air channels improve airflow over flat foam
- Anti-bacterial and dust-mite resistant
- Compact, vacuum-packed delivery
Cons
- No removable or washable cover
- Only 5 cm and sold here in King Single
- Possible off-gassing smell for a few days; 1-year warranty only
Key specs: 5 cm egg-crate high-density foam; no cover; anti-bacterial and dust-mite resistant; King Single 203 x 107 x 5 cm; 1-year warranty.
7. Giselle Cool Gel Memory Foam Topper – Best Cooling for Singles
Hot sleepers on a single bed are best matched to the Giselle Ventilated Cool Gel Memory Foam Topper. The Single measures 190 x 90 x 8 cm, and it combines gel-infused visco-elastic memory foam with perforated ventilation holes drilled through the foam, so airflow and the silicone gel together slow how quickly the surface warms up.
An anti-skid base and more than 1,000 supporting points help with stability and motion isolation, and the removable zippered bamboo cover is machine washable. The 8 cm depth gives solid contouring for a single sleeper. Owner reviews are a useful reality check, though: several note the cool gel is not actually cold to the touch and can still sleep warm in peak summer, with one suggesting cotton sheets to help.
Pros
- 8 cm gel-infused memory foam with ventilation holes
- Removable zippered bamboo cover, machine washable
- Anti-skid base and strong motion isolation
- Expands fully within hours of unboxing
Cons
- Owners say the gel is not cold to the touch and can sleep warm in summer
- Sold here in Single size only
- 1-year warranty
Key specs: 8 cm gel-infused, ventilated memory foam; removable zippered bamboo cover; anti-skid base; Single 190 x 90 x 8 cm; 1-year warranty.
8. Giselle Double-Sided Pillowtop Topper – Best Reversible Seasonal Topper
The Giselle Double-Sided Pillowtop Topper is the pick for sleepers who want one topper that works year-round. This 5 cm Double has a blue cooling, moisture-wicking face for summer and a white coral-fleece face for winter warmth, so you flip it with the seasons rather than buying two.
It is filled with 1000GSM hollow-fibre held in place by 3D wave quilting, machine washable, and ships vacuum-packed for hygiene. An elastic skirt fits mattresses up to 45 cm deep. Because it is a fibre pad rather than foam, it adds plush, hotel-style softness but flattens over time and offers less firm, contoured support than the memory foam picks; the exact Double dimensions are not published by the retailer.
Pros
- Reversible cool side and coral-fleece warm side for all seasons
- Plush 1000GSM hollow-fibre fill with 3D wave quilting
- Machine washable; elastic skirt fits up to 45 cm
- Anti-bacterial fibre fill
Cons
- Fibre pad flattens over time and gives less support than foam
- Exact Double dimensions not stated
- 1-year warranty
Key specs: 5 cm double-sided pillow-top; 1000GSM hollow-fibre with 3D wave quilting; reversible cooling and coral-fleece faces; fits up to 45 cm; Double; 1-year warranty.
9. Giselle 7-Zone Memory Foam Topper – Best Zoned Support for Back Pain
Sleepers chasing targeted support and back-pain relief should consider the Giselle 7-Zone Memory Foam Topper. The King Single measures 203 x 107 x 8 cm, and the 8 cm of visco-elastic foam is divided into seven firmness zones running head to foot (head, shoulders, lumbar, hips, thighs, calves and feet) so heavier areas like the hips and shoulders get more give while the lumbar zone stays supported.
The foam is open-cell for better breathability than closed-cell foam, it folds for storage, and the removable zippered bamboo and jacquard-knit cover is machine washable and resists dust mites and mould. Owners with back pain report real relief and a soft, cradling feel, but one flagged that the edges curled up after unrolling and caused a slight roll toward a partner, so give it time to flatten fully.
Pros
- Seven firmness zones for targeted support
- Open-cell 8 cm foam breathes better than closed-cell
- Removable zippered bamboo cover, dust-mite and mould resistant
- Foldable for storage
Cons
- One owner reported edges curling and causing partner roll until flattened
- Sold here in King Single size only
- 1-year warranty
Key specs: 8 cm 7-zone open-cell visco-elastic memory foam; removable zippered bamboo and jacquard cover; King Single 203 x 107 x 8 cm; 1-year warranty.
How to choose a mattress topper in NZ
Thickness: a 5 cm topper adds a soft top layer and is enough for most sleepers freshening a decent mattress, while 8 cm gives deeper cushioning and suits heavier sleepers or a noticeably firm bed. Go thicker if you want to sink in; thinner if you just want a softer surface.
Material: memory foam contours and relieves pressure points but can trap heat; gel-infused and ventilated foams slow heat build-up; bamboo charcoal and polyester microfibre give a plush, springy pillow-top feel that breathes well but flattens over time and supports less than foam. Pick foam for support and pressure relief, fibre for plush softness.
Sleeping hot: choose gel or ventilated foam, a breathable bamboo cover, or a reversible cooling-side topper, and in a warm bedroom pair it with a fan or one of our picks for portable air conditioners. Cover and care: a removable, machine-washable cover is worth prioritising, since bare-foam toppers can only be spot-cleaned.
Size and depth: match the topper to your mattress size and check the elastic skirt or strap fits your mattress depth (several here fit up to 45 cm). When to buy a new mattress instead: a topper masks a firm or slightly tired mattress, but if yours sags, has broken springs or is past about ten years, a topper is a patch, not a fix.
Good sleep is about more than the bed surface, so some readers also look at magnesium supplements as part of a wind-down routine.
Verdict
The Ecosa Plush Mattress Topper is the best all-round mattress topper in NZ for 2026, balancing body-contouring HD G-7 memory foam, a washable Tencel-blend cover and strong motion isolation. Couples after depth should choose the TSB Living 8cm Dual, budget shoppers the TSB Living 8cm Blue, hot single sleepers the Giselle Ventilated Cool Gel, and anyone with back pain the zoned Giselle 7-Zone. Match the thickness and material to your mattress and how you sleep, and a topper will buy you noticeably better nights for far less than a new bed.
FAQs
Are mattress toppers worth it?
Yes, for most people a topper is worth it. It is the cheapest way to soften a too-firm mattress, add pressure relief or extend the life of a tired bed by a year or two. It will not fix a sagging or broken mattress, but for comfort tweaks it delivers strong value.
How thick should a mattress topper be?
For most sleepers in NZ, 5 cm is enough to soften the surface of a reasonable mattress, while 8 cm suits heavier sleepers or a very firm bed that needs deeper cushioning. Thicker toppers cradle you more; thinner ones simply add a softer top layer.
What is the best mattress topper material?
Memory foam contours and relieves pressure but can sleep warm; gel and ventilated foam run cooler; bamboo charcoal and polyester microfibre feel plush and breathable but flatten faster and support less. Choose foam for support and pressure relief, and a fibre pillow-top for soft, springy comfort.
Which mattress topper is best for back pain?
A medium-firm memory foam topper, ideally zoned, tends to suit back pain best because it supports the lumbar area while cushioning the hips and shoulders. A zoned 8 cm memory foam topper is a good starting point; very soft fibre toppers give less of the support a sore back needs.
Do memory foam toppers sleep hot?
Plain memory foam can trap heat because it moulds closely to the body. Gel-infused foam, ventilated or perforated foam, open-cell foam and breathable bamboo covers all help. Owner reviews suggest cool gel slows heat build-up rather than feeling cold, so hot sleepers should pair it with breathable cotton sheets.
How long does a mattress topper last?
Most mattress toppers last around one to five years. Quality memory foam typically holds up for three to five years, while lower-density fibre and polyester pillow-tops flatten sooner. Rotating the topper, using a washable cover and keeping it clean all help it last longer.
What is the difference between a mattress topper and a mattress protector?
A mattress topper is a thick comfort layer of around 5 to 8 cm that changes how the bed feels. A mattress protector or pad is a thin cover that guards against spills, sweat and dust mites without altering comfort. Use a protector over a topper to keep it clean.
Does a mattress topper go under or over the sheet?
A mattress topper goes directly on top of the mattress, under your fitted sheet. The fitted sheet stretches over both the mattress and the topper to hold everything in place. Bare-foam toppers in particular need a sheet over them since they have no washable cover.
How do you stop a mattress topper from sliding?
Choose a topper with an anti-skid base or an elastic corner skirt, then stretch a snug fitted sheet over both the topper and mattress. Several toppers in this guide have grippy bases or deep-pocket skirts; for the rest, a tight sheet or non-slip pad keeps them in place.
How do you clean a mattress topper?
If the topper has a removable cover, unzip it and machine wash on a warm cycle, then air or line dry. Bare-foam toppers should be spot-cleaned with mild detergent and water and never soaked. Air the topper every few months and clean covers roughly twice a year.