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How do mattresses become Which? endorsed?


When you're looking for a new mattress, the main aspect that you want it to deliver on is how well it can support you. Without this, you'll never be able to get a good night's sleep! Which? takes into consideration how well the mattress supports you back in the sleeping position that you usually sleep in, the stability of the mattress, breathability and whether the mattress restricts easy movements. Therefore, this looks at the edge support, temperature regulation and pressure relief of every mattress they test. Scoring the mattress on all of these performance parameters makes up 55% of the mattress' total score.


The key question that Which? as is whether the mattress is designed to stand the test of time. A quality mattress is designed to last at least 7 years, but Which? take it a step further and use technology to assess how a mattress performs under a 10-year simulation. If they're in a similar condition to their original form, they will have passed the durability test. Overall, this accounts for 40% of the test score.

Ease of use

Lastly, for the remaining 5% of the mattress score, Which? explore how easy it is to look after the mattress. We should regularly rotate our mattresses to keep them in good condition, and for double-sided mattresses, we should also flip them often. In order to do this, you don't want the mattress to be without handles or too heavy. Therefore, Which? accounts this into their scoring, albeit at a much less significant level than other components.

What types of mattresses are endorsed by Which?

Pocket sprung mattresses

There's no doubt that a traditional pocket sprung mattress is one of the most popular types of sleeping solution, therefore, it's no wonder that such a variety of pocket sprung mattresses have been endorsed by Which?. Pocket springs move individually and are designed to move to the contours of your body, so you can receive total body support with even weight distribution. Check out brands such as Silentnight, Relyon and SleepSoul, who have all been endorsed by Which? for their unparalleled traditional pocket sprung mattresses. Silentnight's Eco Comfort 1200 mattress is the perfect mattress for anyone looking for a sleeping solution with an environmentally-friendly aspect as its fillings are entirely comprised of recycled plastic bottles.

Memory foam mattresses

Next on the list of popular options is the memory foam mattress, offering supreme comfort and support. Memory foam moulds to your body as you sleep as the millions of tiny holes that comprise many memory foam mattresses seep out air when pressure is applied. Pressure relieving memory foam ensures your spine is aligned correctly when sleeping on your side, and you can keep the mattress fresh as many incorporate a removable and washable cover. The Emma Original mattress was endorsed by Which? Best Buy, reinforcing the comfort and popularity that this memory foam mattress offers. Whilst other 'bed in a box' vacuum-packed mattress brands haven't been endorsed by Which?, the Nectar memory foam mattress offers a 365-night trial so you can decipher whether that's the option for you. You can rely on Which?'s Best Buy endorsements to find the best memory foam mattress for you.

Latex mattresses

A premium mattress, latex is an open cell foam that feels similar to memory foam mattresses, yet combats the issues usually associated with it. For example, a latex mattress uses natural materials to create a pressure-relieving foam with bounce. In addition to this, latex proves to be a very breathable mattress by comparison to memory foam's strong heat retention properties, so you can enjoy a sleeping environment with that temperature regulating component. Also known for its incredible durability, you can rely on a latex mattress to last for 10 or more years, which is likely why we stock so many Which? Best Buy approved latex mattresses. To discover some of the best mattresses using latex, be sure to browse Dunlopillo's ranges.

Hybrid mattresses

Can't decide what mattress is best for you? Perhaps a hybrid mattress is worth considering, and there are several that have been endorsed by Which? Best Buy. Combining two types of mattresses, usually memory foam, pocket sprung unit or other comfort foam layers, a hybrid mattress allows you to benefit from the support of a spring unit and the comfort of a memory foam layer. Amalgamating two types of mattresses together make for a much more affordable foam mattress, appropriate for many types of sleeping style.

What support tensions are Which? Best Buy endorsed?

Which? tests a large range of support tensions and have endorsed a variety, after all, everyone isn't suited to the same mattress firmness. There's a Which? Best Buy endorsed mattresses for every kind of sleeper including a medium (softer) mattress for side sleepers, a medium firm mattress firmness for people who sleep in a variety of sleeping positions, and firm mattress tensions for preferred back or stomach sleepers. Which? has also endorsed several orthopaedic mattress options for those looking for a mattress to help combat back or joint pain.

What mattress sizes are included in Which? endorsements?

Whilst Which? test their mattresses in double size (135 x 190cm), all of the sizes corresponding to a mattress that has been endorsed will be also. This includes small single (75 x 190cm), single (90 x 190cm), small double (120 x 190cm), double mattress (135 x 190cm), king size mattress (150 x 200cm) and super king size (180 x 200cm). Don't worry, the best mattress is available in single, double, king, super and more!