Cooling Mattresses
A cooling mattress is one built to move heat away from you rather than hold it. That can mean airflow through a spring layer, gel worked into foam, an open structure like latex, or a breathable cover, and the claims range from real engineering to little more than a blue fabric.
Cooling is a feature rather than a construction, so it appears across mattress ranges instead of forming one of its own. The mattresses that sleep coolest are mostly hybrids and pocket sprung models, with latex the cool option among foams.
We compare mattresses across UK retailers and check prices regularly, so you can judge a cooling claim against the specification behind it.
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×What makes a mattress sleep cool?
Four things do most of the work. Airflow is the biggest: a spring layer leaves open space for air to move, so sprung and hybrid mattresses shed heat far better than a solid block of foam. Material structure comes next, with latex and open-cell foams letting more air through than traditional memory foam. Gel infusions absorb warmth at the surface and delay the point at which the mattress heats up. The cover matters more than most people expect, since a breathable knitted fabric moves moisture away while a laminated one holds it against you.
Worth knowing in the other direction: traditional memory foam runs warmest of all, because it softens with body heat and wraps around you, reducing the surface area available to lose that heat.
Who should prioritise a cooling mattress
- Anyone who wakes up hot or damp, or sleeps under a thick duvet in a warm room.
- Couples, since two bodies in one bed generate more heat than one.
- Sleepers who like the feel of memory foam but find it too warm, where gel-infused and open-cell versions are a reasonable compromise.
Where to look for a cooler mattress
- Hybrid mattresses pair springs for airflow with a foam or latex comfort layer, the usual answer for a hot sleeper who still wants cushioning.
- Pocket sprung models are the most breathable construction, particularly with natural wool or cotton fillings that move moisture away.
- Latex has an open structure that stays cool without springs, though it sits at the premium end.
- Gel memory foam runs cooler than plain memory foam while keeping the moulded feel, but not as cool as a sprung mattress.
How to judge a cooling claim
- Look for the mechanism. A named cooling technology tied to a specific material or layer is a real claim; a cool-sounding product name on its own is not.
- Check where the cooling sits. It has to be near the surface to affect the part of the mattress you lie on.
- Weigh the whole build, since a cooling cover over a deep memory foam core will still sleep warm.
- Consider your bedding too: duvet tog and sheet fabric change how hot you sleep as much as the mattress does.
How we compare them
We use information from manufacturer and retailer specifications, verified owner reviews and our own catalogue data across more than 800 construction-checked models, with prices checked regularly across our UK retail partners. You can read more on how we assess mattresses and how we stay independent on How We Make Money.
What type of mattress sleeps coolest?
A pocket sprung or hybrid mattress, because air moves through the spring layer instead of being held in solid foam. Latex is the coolest of the foam-style materials thanks to its open structure. Traditional memory foam is the warmest.
Do cooling mattresses really work?
The ones with a mechanism behind them do, within limits. Airflow and open-cell materials make a measurable difference to how quickly a mattress warms up, and gel helps at the surface, but no mattress actively cools you, and a cooling cover over a warm core changes very little.
Why does my memory foam mattress sleep so hot?
Memory foam softens with body heat and moulds around you, which reduces the surface exposed to the air and holds warmth against your skin. Gel-infused or open-cell memory foam is cooler, and a hybrid with a spring layer will be cooler still.
Is a cooling mattress worth it for night sweats?
A breathable mattress can make you more comfortable, and a sprung construction with a moisture-wicking cover is the sensible choice. Frequent night sweats can have medical causes, so it is worth raising with your GP rather than treating the mattress as the fix.
Does a mattress protector stop a cooling mattress working?
It can. A waterproof or laminated protector puts a barrier between you and the breathable surface, which undoes much of the benefit. A knitted or cotton terry protector lets air and moisture through.