If you flip your pillow at 2am chasing the cold side, the pillow is the problem. Heat concentrates at head level: one side of your face presses into the same spot all night, and a dense foam pillow holds that warmth against you.
Quick answer: The best cooling pillow depends on how you overheat. A cold-touch cover like the Snow Pillow feels instantly cool against the skin, a gel-infused pillow like the 500 Cool Gel draws heat away steadily through the night, and breathable bamboo charcoal suits sleepers who run slightly warm rather than hot. All three beat a standard dense foam or polyester pillow for temperature.
Why your head overheats first
Your body needs to shed heat to fall and stay asleep, and the Sleep Foundation puts the ideal bedroom at around 18°C. The head and neck are where sleepers usually notice failure first, because the pillow sits in continuous contact with skin all night.
It matters more than most people think. Most hot sleepers say overheating itself is what keeps them awake: 82.5% in one 2025 peer-reviewed study. Once the head and neck overheat, the whole bed feels warmer, which is why a cooling pillow is the cheapest big upgrade a hot sleeper can make.
What actually makes a pillow cooling?
Marketing aside, there are three genuine mechanisms, and they suit different people.
Cold-touch covers use fabrics that conduct heat away from the skin quickly, so the pillow feels cold the moment you lie on it. Gel-infused memory foam spreads and releases heat through the night rather than letting it pool where your face rests. Breathable natural fills and covers, like bamboo charcoal foam, work by letting air and moisture move instead of trapping them.
What does not work: a thin "cool" cover over dense, closed-cell foam. If the core cannot breathe, the surface effect disappears within minutes.
The REM-Fit cooling pillows compared
| Pillow | How it cools | Best for |
|---|---|---|
| Snow Pillow | Nordic chill cold-touch cover over open-cell memory foam | Sleepers who want a genuinely cold feel on contact |
| 500 Cool Gel Pillow | Cool-gel layer over supportive memory foam (GH Winner 2026) | Hot sleepers who also need proper neck support |
| Bamboo Charcoal Pillow | Naturally breathable, moisture-regulating bamboo charcoal foam | Warm (not hot) sleepers, allergy-prone sleepers, side sleepers needing 12cm loft |
The cold-touch option: Snow Pillow
The Snow Pillow is the one to choose if what you crave is that cold-side-of-the-pillow feeling, permanently. Its Nordic chill cover conducts heat away on contact, while the open-cell memory foam core underneath stays breathable so the effect lasts rather than fading after a few minutes.
REM-Fit Snow Pillow
A Nordic chill cold-touch cover over breathable open-cell memory foam: instantly cool, and it stays that way.
Shop the Snow PillowThe award winner: 500 Cool Gel Pillow
If you need cooling and proper support in one pillow, the 500 Cool Gel is the benchmark: it won Good Housekeeping's Best Memory Foam Pillow award in 2026. A cool-gel layer draws heat away from the head and neck while the memory foam beneath holds spinal alignment, and the cover unzips for machine washing.
REM-Fit 500 Cool Gel Pillow
Good Housekeeping Winner 2026: a cool-gel layer over supportive memory foam, with a removable washable cover.
Shop the 500 Cool Gel Pillow✓ 100-night trial ✓ Free UK delivery ✓ 0% finance
The natural middle ground: Bamboo Charcoal Pillow
Not everyone needs active cooling. If you run warm rather than hot, the Bamboo Charcoal Pillow regulates temperature and moisture naturally, is hypoallergenic and dust mite resistant, and comes in two depths, including the 12cm loft that suits side sleepers.
Make the whole bed cooler, not just the pillow
A cooling pillow fixes head-level heat, but if the whole bed runs warm, tackle it as a system. Our guide to sleeping in a heatwave covers the room and routine, and a breathable, moisture-wicking mattress protector like the Tencel Cool stops heat building beneath you.
You can compare the full line-up, including depths and feels, in the REM-Fit pillow collection.
Frequently asked questions
Do cooling pillows actually work?
Yes, when the cooling runs deeper than the cover. Cold-touch fabrics, gel infusion and breathable open-cell cores all measurably move heat away from the head; a thin cool-feel cover over dense closed foam does not. Look for the mechanism, not the word "cool" on the packaging.
Which is better: a gel pillow or a cold-touch pillow?
Cold-touch feels cooler instantly; gel works more steadily across the whole night. Choose cold-touch if the sensation of a cool surface is what helps you drop off, and gel if you wake up hot in the small hours. Both need a breathable core behind them to keep working.
Are cooling pillows good for side sleepers?
They can be excellent, because a side sleeper presses one side of the face into the pillow all night, which is exactly where heat builds. Just make sure the loft suits the position: side sleepers usually need 10 to 12cm. Our guide to the best pillow for side sleepers covers how to check.
Can you wash a cooling pillow?
Wash the removable cover, never the memory foam core: water permanently damages foam. All REM-Fit cooling pillows have machine washable covers, and our guide to washing pillows explains the method by fill type.
Why does my pillow get hot at night?
Continuous skin contact plus a core that cannot release heat. Your head warms the surface, dense foam stores that warmth, and by the small hours the pillow radiates it back. Breathable open-cell foam, gel layers or a cold-touch cover break that cycle.
