If you're waking up drenched, damp or too hot to sleep, you're not alone — night sweats affect a huge number of people, especially during menopause, perimenopause, illness, or simply through hot British summer nights. The good news: the fix is often much simpler (and cheaper) than a new mattress.
Why do I get so hot and sweaty in bed?
Most mattresses and cheap protectors trap heat and moisture. Memory foam is a common culprit — it holds warmth and has nowhere for humidity to escape. Add a plastic-backed protector on top and you've built a sweatbox. Your body naturally cools down as you sleep, but if the heat and moisture can't escape, you overheat and wake up damp.
What actually helps
The single most effective change is a breathable, moisture-managing mattress protector — one that lets heat and humidity move away from your body instead of trapping it. Look for these features:
- Breathable surface — a quilted or terry surface that wicks moisture rather than sealing it in.
- Air-flow construction — toppers with a 3D mesh border circulate air underneath you, which makes a noticeable difference on hot nights.
- Natural moisture absorption — terry towelling surfaces are excellent at absorbing sweat while still feeling soft.
Do waterproof protectors make you sweat more?
They can — if they use a cheap plastic backing. But a modern breathable waterproof membrane blocks liquid while still letting the surface breathe, so you get protection without the greenhouse effect. If you need waterproofing (for spills or night sweats soaking through), choose one specifically described as breathable and silent.
Our recommendations for hot sleepers
We've grouped our most breathable, sweat-managing protectors and toppers together so you don't have to guess. Have a look at our Cooling Bedding for Night Sweats collection — it includes our breathable waterproof protector, an absorbent terry towelling protector, and the Air Flow topper with its cooling mesh border.
Quick tips beyond the protector
- Swap synthetic sheets for cotton or bamboo — they breathe far better.
- Keep your bedroom around 16–18°C.
- Wash bedding regularly at 40°C to keep it fresh and moisture-free.
A cool, dry bed is usually a few small changes away — and it starts with what's directly under you.