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Best mattress toppers: tried and tested for a comfortable sleep
Want to give life to an old mattress or make it feel softer? Consider a mattress topper – a layer of fabric and padding that will add a few extra centimetres and change the feel of your existing mattress, which should also help to improve your sleep.
We've tested toppers made of memory foam, latex, feather and down, microfibre, wool and cotton.
You can buy a basic mattress topper for less than £20, although many cost more. Our reviews and survey of mattress topper brands can guide you towards one that's worth your money.
How our tests find you the best
We've tested 39 mattress toppers
We assess popular mattress toppers from big brands and at different price points to ensure you get the best value and performance.
Supportive
A good mattress topper keeps your spine in the same shape as when you’re standing up. We measure up to 36 different spinal points both when standing up and lying down.
Steady
A good mattress topper absorbs movement so you get a decent night's sleep even with a fidget next to you. Poor mattresses can shift around too much.
We also test...
How much difference the topper makes to the softness of your mattress, which our members have told us is a key consideration, and how easy it is to wash.
The best mattress toppers from our tests
Only logged-in Which? members can view the mattress toppers test results below.
Join Which? to get instant access to our test results and Best Buy recommendations, below.
| Mattress topper | Price | Test score | Type | Change in firmness | Change in body support |
|---|---|---|---|---|---|
Sign up to reveal Get instant access to this and all our scores and recommendations. Unlock tableFirst month £5, then £11.99 per month, cancel at any time Already a member? Log in | 93% | ||||
| 89% | |||||
| 87% | |||||
| 84% | |||||
| 82% | |||||
| 82% | |||||
| 81% | |||||
| 80% | |||||
| 80% | |||||
| 75% | |||||
| 72% | |||||
| 71% | |||||
| 70% | |||||
| 68% | |||||
| 63% | |||||
| 62% | |||||
| 58% | |||||
| 57% | |||||
| 55% | |||||
| 36% |
Sign up to reveal
Get instant access to this and all our scores and recommendations.
Unlock tableFirst month £5, then £11.99 per month, cancel at any time
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We've tested 39 mattress toppers in total, but the tables display our top picks and Don't Buys only.
Dates tested: March 2025, April 2024 and July 2023. Page last checked: May 2025. We're not able to show every retailer and cheaper prices may be available.
The mattress toppers we tested
All the mattress toppers we tested are listed in alphabetical order, below.
Only logged-in Which? members can view the best mattress toppers from our tests.
Join Which? to get instant access to our test results and Best Buy recommendations below.
Dormeo Octasmart Plus Mattress Topper
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Available from Dormeo (£249)
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Most recently tested March 2025
Size and type 188 x 135 x 8cm (H x W x D), memory foam
Need to know Removable washable cover, no corner straps, 8kg
Dorma Tencel Blend Memory Foam Mattress Topper
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Most recently tested July 2023
Size and type 189.5 x 133.5 x 8cm (H x W x D), memory foam
Need to know Removable cover not machine washable, elasticated corner straps, 11.5kg
Dunelm Cooler Than Memory Foam Mattress Topper
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Available from Dunelm (£60)
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Most recently tested July 2023
Size and type 190 x 132 x 4cm (H x W x D), memory foam
Need to know Removable washable cover, elasticated corner straps, 3.65kg
Dunelm Gel Fusion Mattress Topper
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Most recently tested March 2025
Size and type 188 x 135 x 6cm (H x W x D), memory foam
Need to know Removable washable cover, elasticated corner straps, 6.5kg
Dunelm Memory Foam Mattress Topper
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Most recently tested March 2025
Size and type 189 x 136 x 5.5cm (H x W x D), memory foam
Need to know Removable washable cover, elasticated corner straps, 7.25kg
Dusk Luxury Duck Feather & Down Mattress Topper
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Available from Dusk (£60)
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Most recently tested April 2024
Size and type 188 x 127.5 x 5.5cm (H x W x D), duck feather and down
Need to know Whole topper is machine washable, elasticated corner straps, 5kg
Emma Premium Topper
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Available from Emma (£331.35)
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Most recently tested July 2023
Size and type 191 x 135.5 x 8cm (H x W x D), memory foam
Need to know Machine-washable cover, no corner straps, 11.3kg
John Lewis Support Memory Foam Mattress Topper
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Available at John Lewis (£108)
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Most recently tested April 2024
Size and type 185 x 132 x 4.5cm (H x W x D), memory foam
Need to know Removable washable cover, elasticated corner straps, 5kg
After the best night's sleep? See our reviews of the best pillows and best duvets from our tests
Luna Gel Memory Topper
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Most recently tested April 2024
Size and type 189 x 133 x 5.5cm (H x W x D), memory foam
Need to know Removable cover not washable, no corner straps, 8kg
M&S Warm & Toasty Mattress Topper
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Most recently tested March 2025
Size and type 187 x 134.5 x 1.5cm (H x W x D), polyester
Need to know Whole topper is machine washable, elasticated corner straps, 1.4kg
Panda The Topper
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Most recently tested July 2023
Size and type 188 x 135 x 5cm (H x W x D), memory foam
Need to know Removable washable cover, elasticated corner straps, 6.7kg
Silentnight Deep Sleep Ultimate 500 Mattress Topper
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Available from Silentnight (£36)
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Most recently tested March 2025
Size and type 188 x 132 x 2.5cm (H x W x D), polyester
Need to know Machine-washable cover, elasticated corner straps, 1.8kg
Silentnight Impress Memory Foam 7cm
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Most recently tested July 2023
Size and type 188 x 135 x 6.5cm (H x W x D), memory foam
Need to know Removable washable cover, no corner straps, 7.75kg
Silentnight Ultimate Luxury Deep Sleep
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Most recently tested April 2024
Size and type 189 x 131 x 4.5cm (H x W x D), polyester
Need to know Whole topper is machine washable, 3kg
Simba Hybrid Essential Topper (Hybrid 1500)
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Most recently tested April 2024
Size and type 188 x 135 x 7cm (H x W x D), memory foam and springs
Need to know Removable washable cover, elasticated corner straps, 10.8kg
Simba Hybrid Topper
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Available from Simba (£349)
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Most recently tested July 2023
Size and type 190 x 134 x 6.5cm (H x W x D), hybrid
Need to know Removable washable cover, elasticated corner straps, 10.1kg
Slumberdown Thermal Nights Mattress Topper
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Available at Habitat UK (£40)
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Most recently tested March 2025
Size and type 191 x 135 x 1.5cm (H x W x D), polyester
Need to know Whole topper is machine washable, elasticated corner straps, 1.8 kg
Soak&Sleep Goose Down Dual Chamber Mattress Topper
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Available from Soak&Sleep (£190)
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Most recently tested July 2023
Size and type 191 x 134 x 9.5cm (H x W x D), feather
Need to know Whole topper is machine washable, elasticated corner straps, 7.3kg
Soak&Sleep Soft As Down with Silk Mattress Topper
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Available from Soak&Sleep (£155)
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Most recently tested July 2023
Size and type 184 x 133.5 x 5.5cm (H x W x D), silk
Need to know Whole topper is machine washable, elasticated corner straps, 4.2kg
Woolroom The Woolly Sprung Topper
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Available from Woolroom (£517.30)
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Most recently tested April 2024
Size and type 190 x 137 x 8.5cm (H x W x D), wool
Need to know Not machine washable, elasticated corner straps, 12kg
How we test mattress toppers
We test every mattress topper using a strict set of criteria to sort the best from the rest. We examine how much difference a mattress topper makes compared to our test mattress and seek to answer the following questions:
- Will the mattress topper provide decent body support? We use state-of-the-art equipment to measure spinal position in a side, back and front sleeping position, and we check that no part sinks too far into the mattress.
- Will the mattress topper provide decent pressure distribution? A good topper should help to make a difference when distributing your body pressure evenly over the surface of your mattress. For example, so that your shoulders or hips don’t start to dip in one area.
- Will the mattress topper make my mattress softer? In our survey, 47% of Which? members told us they use a topper to make their mattress softer, so we test using a standard mattress and calculate the change in firmness when using the topper with it.
- Is the mattress topper washable? Some toppers have a removable washable cover, which will help to keep it in the best condition much more easily. Some toppers are safe to go straight in the washing machine, while others can only be spot cleaned.
- Stability Each topper is assessed to see how well it helps stops movement travelling across the surface of the topper and mattress.
We regularly revisit the mattress toppers on sale to see if there are any more popular models that need testing – and when we find them, we do.
Why you can trust us: at Which? we're free from manufacturer and retailer influence. Find out more about our impartiality and how your support helps us to stay editorially independent
Do mattress toppers really make a difference?
Toppers sit on top of your mattress, offering a few extra centimetres of material to make the whole experience more comfortable or to help change the firmness of a mattress. They come in a similar range of sizes to mattresses: single, double, king size and super king size.
A topper can be made of memory foam, feather/down, microfibre, polyester or a different soft material, as well as more natural materials such as wool or cotton. They give some degree of protection from stains and wear or tear, but will probably not be waterproof, unlike a mattress protector.
If you can't afford a new mattress, or don't want to replace the one you have at the moment, a mattress topper can help make what you have more comfortable for the time being. However, if your mattress is already sagging, or has softened a lot over time, a mattress topper may not make that much difference and it's probably better to buy a new mattress.
Some toppers can cost a lot and we've found cheaper-than-average Best Buy mattresses that cost as much as some of the more expensive double mattress toppers. So, depending on the age of your mattress, you might be better off investing in one of our best mattress deals instead.
Mattress toppers vs mattress protectors
A mattress topper (or 'enhancer' in some retailers) isn't a mattress protector, so don't get confused between the two.
Mattress protectors shield your mattress (and topper) from stains and can help prevent damage. A protector offers a removable and washable protective layer to your mattress, helping to keep it fresher for longer. It won't be as thick as a topper and it will often be little more than a sheet.
Can you return a mattress topper?
Unless it's faulty or damaged, or part of a sleep trial, mattress toppers generally can't be returned for hygiene reasons – unless they're unused.
If you're unsure, choose from a brand that offers a sleep trial on its mattress toppers. Panda toppers, for example, are covered by a 30-night trial when bought direct from its website.
Mattress topper brands rated
Which? members can log in to unlock our full survey results. If you're not already a member, you can get instant access to all of our independent reviews by joining Which? today.
| Brand | Which? customer score | Comfort | How well the mattress topper matched its description | Value for money |
|---|---|---|---|---|
| Dorma | Sign up to reveal Get instant access to this and all our scores and recommendations. Unlock tableFirst month £5, then £11.99 per month, cancel at any time Already a member? Log in | |||
| Dunelm | ||||
| Ikea | ||||
| John Lewis | ||||
| Marks & Spencer | ||||
| Silentnight | ||||
| Soak&Sleep | ||||
Sign up to reveal
Get instant access to this and all our scores and recommendations.
Unlock tableFirst month £5, then £11.99 per month, cancel at any time
Already a member? Log in
Sample sizes: Dorma (36), Dunelm (106), Ikea (81), John Lewis (234), Marks & Spencer (74), Silentnight (74), Soak&Sleep (34). Scores are based on a May 2023 survey of 1,782 people who own a mattress topper.
Mattress topper types: what you need to know
There are four main types of mattress topper: memory foam, feather and down, microfibre and latex. You'll also find other toppers made from more natural materials, such as wool or cotton.
Each type of mattress topper feels different to lie on. Down toppers feel soft, plush and cosy, while memory foam is firm and spongey and can feel warmer as you lie on it.
Memory foam
Made of a temperature-sensitive material, memory foam will react to your body heat and contour to your shape – which manufacturers claim helps relieve painful joints.
A memory foam mattress topper should spring back to the same height each time you use it, too, unlike one made of down or microfibre, which will need to be fluffed up.
It's not for everyone though, so it's worth trying a memory foam mattress topper in-store before buying, if you can.
Feather and down
Feather and down mattress toppers have a more traditional feel, and you can find cheap down mattress toppers for around £50. Premium feather and down toppers can be expensive.
These natural options can flatten down quickly and will need regular fluffing to retain their shape.
Feathers and down aren't always taken from birds in a humane way. To ensure you're buying a topper with down that has been responsibly farmed, we recommend checking with manufacturers and retailers to find out what their policies are before you buy.
Microfibre and hollowfibre
Microfibre is a synthetic material, often used in pillows and duvets. It's the most affordable of all mattress topper types – you can pick one up for as little as £20 in some places.
Microfibre isn't as breathable as down and it will flatten more quickly, but this can be fixed by regularly shaking to fluff it back up. Its synthetic fibres make it hypoallergenic, too. Some of these toppers are sold as ‘anti-allergy’ and have been treated with a chemical to prevent common allergens such as dust mites and pollen.
Latex
Made of either rubber tree sap or synthetic rubber, latex mattress toppers tend to be cooler and more breathable than memory foam. Latex contours to your body shape like foam, but its elasticity means it will bounce back quickly.
They're usually quite expensive, but latex is more durable than any other bedding material according to manufacturers, so they should stay comfortable for longer.
Tips for cleaning your mattress topper
It's important to follow the instructions that come with your mattress topper. Some state outright that you cannot wash, bleach, tumble dry, iron or clean them, and suggest spot cleaning with a clean sponge only. If cleaning regularly is important for you, perhaps because you have allergies, then look for a topper with a removable washable cover or a topper that can be washed whole.
Three quarters of the double mattress toppers we tested come with a washable cover. Some covers are removable and you wash this part, while other toppers can go straight in the washing machine whole – always check the care label first.
Most toppers we tested advised washing at 40°C on a gentle wash. Some state up to 60°C but, as it's possible to shrink it in hot water, check the washing instructions for your topper.