Cooling bedding for night sweats: what helps, what to expect

Cooling bedding for night sweats can make nights easier: breathable sheets, a fan, layered blankets and, for some women, a cooling mattress pad help you shed heat and fall back asleep. What it cannot do is reliably reduce how often night sweats happen. If sweats wake you most nights, treating them matters more.

Why a cooler bed helps you sleep

Heat and sleep do not mix well. A 2012 review of how temperature affects sleep found that in real-life conditions, with bedding and clothing, heat exposure increases time awake and reduces slow-wave (deep) sleep and REM sleep. Humid heat adds to the thermal load, which is relevant when you are sweating into your sheets.

Room temperature matters too. In a study of older adults that tracked sleep and bedroom temperature at home, sleep was most efficient and restful when the night-time temperature was between 20 and 25 °C (68 to 77 °F). As the room warmed from 25 to 30 °C (77 to 86 °F), sleep efficiency fell by 5 to 10%. People varied a lot, so the best temperature for you is the one you sleep best at, but a warm room is clearly not helping.

Night sweats add a specific problem. The Menopause Society notes that hot flashes can be triggered by small rises in core body temperature, so a bed that traps heat may make it easier to tip into one, and harder to cool down afterward.

What the evidence says about cooling for night sweats

The research on cooling products in menopause is small and mostly uncontrolled.

Study	Who	What they used	What happened
Avis 2022	15 women aged 45 to 59 with 4 or more hot flashes or night sweats a day	Cooling mattress pad system every night for 8 weeks	Hot flash and night sweat frequency fell 52%; sleep quality scores improved; no comparison group
Composto 2021	39 women aged 45 to 58 with sleep-disrupting hot flashes	Wrist-worn warming and cooling device for 2 weeks, compared with 2 weeks without it	Insomnia scores improved; no objective change in the number or length of night-time hot flashes, according to The Menopause Society’s review
Forehead cooling pilot (in The Menopause Society review)	20 postmenopausal women	Forehead cooling device plus sleep advice for 4 weeks	Women reported fewer sleep problems and hot flashes; no comparison group

The mattress pad result looks impressive, but without a placebo or comparison group it is impossible to know how much was due to the pad. In its 2023 position statement on nonhormone treatments, The Menopause Society reviewed the cooling studies and concluded that cooling interventions must be tested in larger randomized, sham-controlled trials. It rated cooling techniques as Level II evidence, meaning limited or inconsistent, and listed them as not recommended for treating hot flashes. Its key point is that there is no strong evidence that cooling techniques improve vasomotor symptoms.

That is not the same as saying cooling is useless. The society’s own list of cooling techniques includes dressing in layers, breathable clothing, hand or electric fans, cold packs under the pillow, turning the pillow when it feels warm, dual-control electric blankets or a bed fan, and a lower room temperature. These are reasonable comfort steps. They just are not a treatment.

Types of cooling bedding

Type	How it works	Evidence in menopause	Things to weigh
Breathable natural-fiber sheets (cotton percale, linen)	Light, open weaves let heat and moisture escape	No trials	Cotton holds moisture after heavy sweating; linen wrinkles
Moisture-wicking sheets (synthetic blends, lyocell and similar fibers)	Pull sweat away from the skin and dry faster	No trials	Feel varies; check washing instructions
Layered light blankets	Let you remove warmth without fully waking	No trials; listed by The Menopause Society as a cooling technique	Separate blankets help if your partner runs cold
Passive cooling toppers and pads (gel or “cool-touch” materials)	Marketed to feel cool and draw heat away from the body	No trials	Claims are rarely tested; any cool feeling may fade as the material warms
Active cooling pads (water or air circulation)	A bedside unit pumps cooled water or air through a pad	One uncontrolled pilot, 15 women	Cost, noise, upkeep of the unit
Fans and bed fans	Move air across the skin and through the bedding	Listed by The Menopause Society as a cooling technique	Noise
Cooling pillows	Materials or covers that stay cooler to the touch	No trials	Turning a regular pillow or a cold pack does a similar job

For fabrics in sleepwear, our guide to dressing for hot flashes compares the options.

What to look for when you buy

Breathability first. Thick, tightly woven or plastic-backed layers hold heat. Some waterproof mattress protectors can do the same, so if you use one, choose one described as breathable.

Washability. With night sweats you may wash bedding more often than usual. Check that sheets, pillow covers and pad covers can be machine-washed, and keep a second set so you can change the bed in the night.

Certifications, and what they actually mean. Two labels come up often, and neither is about cooling.

• OEKO-TEX STANDARD 100 applies to textiles. According to OEKO-TEX, every component of a certified item, down to thread and buttons, has been tested against a list of more than 1,000 harmful substances. Limits are stricter for products in direct skin contact, such as bed linens. You can check that a label is valid by entering its certificate number in the organization’s online Label Check.
• CertiPUR-US applies to foam in mattresses, toppers and pillows. Certified foams are made without formaldehyde, ozone depleters, phthalates regulated by the US Consumer Product Safety Commission, and mercury, lead and other heavy metals. They also have low emissions of volatile organic compounds (under 0.5 parts per million) and are screened for certain flame retardants and other chemicals of concern. The program is run by a nonprofit organization.

Both labels tell you something useful about what is in a product. Neither says it sleeps cooler. Treat cooling claims on packaging as marketing until you have tried the product yourself, and check the return policy before you buy anything expensive.

Our product lists for sleep and hot flashes and night sweats check certifications for the bedding and other products we include.

Setting realistic expectations

Cooling bedding is for comfort. It can help you get through a night sweat with less disruption, cool down faster and fall back asleep, and some women find that alone makes nights bearable. Based on current evidence, you should not expect it to reduce how often night sweats happen.

Treating the hot flashes themselves is what changes their frequency. The Menopause Society states that hormone therapy remains the most effective treatment for hot flashes and night sweats. For women who cannot or prefer not to use hormones, it rates cognitive behavioral therapy, clinical hypnosis, SSRI and SNRI antidepressants, gabapentin and fezolinetant as supported by good and consistent evidence. See night sweats, hormone therapy and sleep and non-hormonal treatments for hot flashes.

A simple plan for tonight

1. Lower the bedroom temperature if you can, and use a fan.
2. Swap a heavy comforter for two or three light layers.
3. Use breathable sheets and loose, light sleepwear.
4. Keep a spare set of sleepwear, a towel and cold water by the bed.
5. If you wake hot, throw off a layer, turn the pillow and let yourself cool down before trying to sleep again.
6. Track night sweats and wake-ups for two weeks in the sleep diary, so you have something concrete to show a clinician.

When to see a clinician

Book a visit if night sweats wake you most nights, if you are changing sleepwear or sheets in the night, or if poor sleep is affecting your days. An ob-gyn can talk through hormone and nonhormone options. See a clinician promptly if night sweats come with fever, unexplained weight loss, swollen glands or a new cough, or if they began after starting a new medicine, because these can have causes other than perimenopause. In an emergency, call 911.