Cooling sheets and duvets for menopause

This page covers the bed itself. For the room around it (curtains, windows, fans and nightwear), see our guide to cooling a bedroom without air conditioning. What follows is drawn from the National Institute on Aging and NHS advice on hot flashes, a 2024 systematic review of bedding fibres, the sleep laboratory studies it rests on, and a textile testing lab's notes on tog ratings. Nobody here has slept on the sheets in question, and no product is recommended by name.

Why bedding matters more during a hot flash

A hot flash pushes heat out through the skin and often ends in sweat. Under covers, that heat and moisture have to get through the bedding before they can leave you. A review of heat and sleep by Kazue Okamoto-Mizuno and Koh Mizuno found that once people are covered, heat disturbs sleep more than cold, and humid heat is worse again, because sweat that cannot evaporate stops cooling you and simply makes you wet. The same review notes that wet fabric holds less warmth, which is why the chill that follows a sweat can keep you awake longer than the flash did.

So the job of a bed in menopause has two halves: let heat out quickly when a flash starts, and avoid leaving you lying in damp cloth afterwards. The National Institute on Aging puts it in one line: layer your bedding so it can be adjusted as needed.

What the research says about fibre

The best summary is a 2024 systematic review in the Journal of Sleep Research by Xinzhu Li, Mark Halaki and Chin Moi Chow at the University of Sydney. They searched six databases and found only nine studies that compared sleep across two or more fibre types. The fibres tested were cotton, polyester, wool and blends for sleepwear, cotton, duck down, goose down, polyester and wool for duvets, and linen and cotton-polyester for sheets.

For bedding, two results stand out. Linen sheets improved sleep quality in young adults in warm conditions, and goose-down duvets increased deep, slow-wave sleep in young adults in cool conditions. The authors call the link between fibre and sleep complex and say the studies were too different from one another to compare cleanly.

One of those nine is worth reading on its own. In a 2016 sleep laboratory study, 17 healthy people with an average age of 25 slept under wool or polyester duvets in rooms held at 17°C or 22°C. Wool pyjamas helped them fall asleep sooner than cotton ones did, but the duvet fibre made no difference to any sleep measure. Everyone slept better in the cooler room. Two of the five authors worked for Australian Wool Innovation, the wool industry body, which is worth knowing when you read the pyjama result.

What none of these studies did was put women in perimenopause or menopause under the covers. The mechanism they point to does carry over, though. The review explains that natural fibres such as cotton and wool conduct more heat once they have absorbed moisture, and that in warm conditions a fabric needs to let water vapour through so sweat can evaporate and the skin stays dry. The 2016 paper adds that polyester absorbs less moisture than cotton, and cites a study where people sweated more in polyester than in cotton in hot, humid air.

Percale, sateen and the feel of a sheet

Weave changes a cotton sheet as much as the fibre does. Percale is a plain weave, one thread over and one under, which gives a matte surface that feels crisp and slightly cool when you first touch it. Sateen floats each thread over four and under one, so more of the yarn lies flat on the surface. It feels smoother and heavier and drapes closer to the body.

Bedding sellers almost all describe percale as the cooler of the two, and the reasoning is sound: a looser, crisper fabric sits away from the skin and lets air move beneath it. None of the sources on this page measures airflow through the two weaves side by side, so treat it as a sensible rule of thumb. Linen, the one sheet fibre with a positive warm-night result in the review, has a similar crisp, open feel.

What "cooling sheets" means on a label

"Cooling" has no agreed test behind it. On a sheet it usually means one of three things: a fibre or weave that feels cool to the touch, a fabric sold as moisture-wicking, or a finish applied to the cloth. Each may feel pleasant. None of them has been shown in an independent trial to reduce menopause hot flashes or night sweats, and the review above does not include any sheet sold under that name.

The nearest research is on a different kind of product. A 2022 pilot study in Menopause led by Nancy Avis at Wake Forest gave 15 women aged 45 to 59, each with four or more hot flashes or night sweats a day, a cooling mattress pad system to use for eight weeks. Their daily count of symptoms fell by 52% and their sleep scores improved. It had no comparison group, so some of that change could be expectation or symptoms easing on their own, and the authors call it preliminary. It makes active cooling worth studying properly, but it tells us nothing about sheets.

My own test for a "cooling" sheet is simple: wash it, sleep on it for a fortnight and ask whether you wake drier. If the answer is no, the label did nothing for you.

Cooling duvets: what a tog rating tells you

A tog is a measure of thermal resistance, meaning how well a material holds warmth in. In Britain a duvet's tog is measured to a British Standard, and IDFL, a textile testing lab, gives the range as 4.5 for a summer duvet up to 15 for very cold winters, with adult winter duvets usually between 10 and 15. The higher the number, the warmer the duvet. Outside the UK and Ireland a duvet or comforter may be sold as "lightweight" or "summer weight" with no number, so look for the fill weight or ask for the tog.

IDFL is frank about the limits. The test uses a new quilt laid flat in a laboratory, while a real duvet drapes around a body and gets washed, and cheaper quilts lose their rating quickly. A tog is a rough guide to warmth. It tells you nothing about how damp the fill gets once you sweat into it, which for night sweats matters as much.

For someone who runs hot at night, a 4.5 tog duvet is the obvious starting weight. Some duvets come as two thin layers that fasten together, which gives you a summer weight and a heavier one in a single purchase and suits the switch between hot and cold that many women describe in perimenopause.

Layered bedding for menopause

The NIA layering advice works best when each layer can be moved with one hand while you are half asleep. A bed built that way might look like this:

• A fitted sheet in cotton percale or linen, washed often enough to stay crisp.
• A flat top sheet, the layer you keep when everything else is pushed off.
• A thin cotton or wool blanket for the cold spell after a sweat.
• A low-tog duvet on top, which can be folded down to the foot of the bed for most of the night.
• A small towel by the pillow or folded under your shoulders, so a sweat does not mean stripping the bed.

The Okamoto-Mizuno review notes that sleepers in a warming room push covers off the neck, shoulders and upper arms first. That makes the top sheet the layer doing most of the work, and it is the one I would spend on before the duvet. The NHS menopause page adds lightweight clothing, a cool shower, a fan and keeping your bedroom cool to the same list, and those steps make any bedding work better.

Separate duvets for two sleepers

Sharing one duvet with someone who does not have hot flashes means one person always loses. Two single duvets on a double bed, common in Scandinavia and Germany, let each of you choose a weight. The warmer sleeper can take a 4.5 tog or just a sheet and blanket while the other keeps a winter duvet. Nobody ends up in a tug of war with the covers at 3am, and one person throwing off a cover no longer lets cold air in on the other.

Single duvets on a double bed leave a small gap in the middle, which some couples dislike for a week and then stop noticing. Put the warmer sleeper on the side nearest the window or fan as well. The existing bedroom cooling guide covers the rest of sharing a bed when one of you runs hot.

How to tell whether a change helped

Bedding is easy to change and hard to judge, because hot flashes vary from night to night anyway. Change one thing at a time and give it two weeks. Note each morning how often you woke hot, whether you woke damp, and how long you lay awake afterwards. The printable night diary has columns for exactly that, and the two-week trigger test uses the same one-change-at-a-time approach for evening habits.

If you are soaking through clothes and sheets most nights, or the sweats come with a fever, a cough or weight loss you cannot explain, the NHS advises seeing a GP. The night sweats checker goes through those signs one by one. This site gives no advice on HRT, medicines or supplements. Talk those through with your doctor.

My take

I'd start with a crisp cotton percale or linen top sheet, then a 4.5 tog duvet, plus a second single duvet if you share the bed, and I'd skip anything sold as a cure. That combination follows the NIA layering advice and the one warm-night fibre result in the review, and it costs less than most sheets marketed as cooling. Anything sold on a promise to stop night sweats is asking you to pay for a result nobody has shown. Everything else about a cooler night is in the cooler bedroom section.