Free shipping both ways. 100-night risk-free trial & 1-year warranty. No subscription, ever.
Cooly water-cooled mattress pad on a bed
No more waking up drenched at 3am
Dual-zone cooling, his side and her side
Active water cooling, not cool-to-the-touch fabric
Same cooling tech without the $2,000 price tag
If fans, AC and cooling sheets have not fixed it, this will
★★★★★ 4.9 / 5· 175 reviews
✓ 5,000+ hot sleepers cooled

Cooly Water-Cooled Mattress Pad

Real chilled-water cooling that keeps you dry all night. No subscription, no app, no $2,000 price tag.

Choose your size Queen & King cool each side on its own
Order today to get it by Tuesday
✓ Free shipping ✓ 100-night risk-free ✓ Ships in 24h
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MT
"I almost didn't buy because of the leak stories on the other brands. Eight months in, not one drop, and I finally sleep through the night."
Marisol T. · ✓ Verified buyer

As seen in

SleepWire The Nightly RESTWELL GEARwise Home& Calm

Cooling you feel at 3am, not just when you get in

Affordable, effective, whisper-quiet cooling that keeps working long after the gimmicks quit.

All-night cooling

Cools to 55°F and holds it. Not a five-minute chill that fades.

Supports REM & deep sleep

A cool bed helps you drop in, and actually stay there.

Eliminate body sweat

Wake up dry, not soaked. No more flipping the pillow.

Works with your setup

Slides under your sheet. Keep the bed you already own.

The Cooly water-cooled unit resting on its folded cooling pad

Energy efficient

Cool sleep for pennies a night. Skip the $400 AC bill.

EMF free

No electronics under your body. Just water and a quiet pump.

Ultra-quiet operation

A soft hum you forget is on. It will not wake your partner.

No maintenance

A quick rinse about once a week. That is the whole chore.

❄ Active water cooling

Bamboo sheets and gel toppers cannot pull heat out. Cooly can.

Here is why nothing you have tried has worked. "Cooling" fabrics and gel foams only feel cool for a few minutes. Once your body heat soaks in, they have nowhere to send it, so they turn into a heat trap and you wake up drenched.

Cooling sheets & gel foam

Sit still and soak up heat, then radiate it right back at you by 2am.

→
Cooly water cooling

A quiet pump circulates chilled water and actively carries heat away, all night.

If fans, AC, and "cooling" sheets have not fixed it

You have probably already spent money trying to sleep cool. Here is why each one left you sweating, and what finally works.

✗Bamboo sheets · felt cool for 5 minutes, then trapped the heat
✗Gel mattress topper · soaked up your heat and turned into a warm slab
✗Fan pointed at the bed · loud, dries your throat, still woke up soaked
✗AC blasting all night · a huge power bill and the same night sweats
✓Cooly · chilled water actively pulls heat away, every hour until morning

He runs hot. She runs cold. Now you both sleep.

The nightly thermostat war is over. On Queen and King, each side of the bed has its own unit, so one of you can sleep at 58°F while the other stays cozy. No compromise, no waking each other up.

Queen & King include two cooling units, one per side.
His side
58°F
Her side
68°F

The same water-cooling tech, without the $2,000 price tag

The big-name smart-bed systems work. They also cost as much as a used car and never stop charging you. Cooly gives you the part that actually cools you, and skips the rest.

Coolyfrom $199
The others$2,000+
Active chilled-water cooling
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No monthly subscription
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Works without an app
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No EMFs under your body
✓
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5-minute setup, any mattress
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Pay once, sleep cool for years
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Simple 5 minute setup

No tools, no installer, no new mattress. You will be sleeping cold before you finish your show.

The Cooly cooling pad placed on the mattress

1Unfold & place pad

Lay the pad on your mattress and put your fitted sheet back over it. You sleep on your normal sheet.

Filling the Cooly water tank with tap water

2Fill tank & plug in

Pour regular tap water into the unit on your nightstand and plug it into the wall. That is the whole install.

A made bed with the Cooly unit on the nightstand

3Sleep cool tonight

Pick your temperature. Within minutes the bed is cold, and it stays that way until morning.

★★★★★

4.9 from 5,000+ hot sleepers

Real worries, honestly answered. Here is what people say after the skepticism wore off.

★★★★★
"I almost dropped two grand on the big-name bed. This does the exact same cooling for a tenth of the price. I feel a little dumb for waiting so long."
JR
James R.
Austin, TX
✓ Verified buyer
★★★★★
"Every cooling thing I tried quit on me by midnight. This one is still cold when my alarm goes off. That was the part I did not believe until I felt it."
DK
Devon K.
Sleeps hot, always has
✓ Verified buyer
★★★★★
"The cleaning reviews scared me off for weeks. It is honestly a five-minute rinse once a week. I built it up in my head to be way worse than it is."
PS
Priya S.
Phoenix, AZ
✓ Verified buyer
★★★★★
"Six months, zero leaks, still ice cold. I keep it on a little tray just in case, like they suggest, but I have never needed it. Rock solid so far."
ML
Marcus L.
Verified buyer
✓ Verified buyer
★★★★★
"Menopause night sweats had me up and changing my shirt every night. First full night of sleep in two years. My husband bought me a second one for the guest room."
EV
Elena V.
55, finally resting
✓ Verified buyer
★★★★★
"My husband is a furnace and I am always freezing. The two-sided cooling ended the thermostat fights for good. We both sleep, and we actually cuddle again."
TB
Tara B.
Queen, dual-zone
✓ Verified buyer

Recommended by sleep doctors

AP25+ years
"For people who overheat at night, temperature is one of the biggest levers for better sleep, and one of the easiest to fix. Cooly is an evidence-based way to regulate bed temperature that I confidently recommend as part of a healthier sleep routine."
Dr. Andrew Proulx, M.D.Over 25 years in clinical practice
100NIGHTS

Sleep on it for 100 nights

Try Cooly through a full stretch of hot nights. If you are not sleeping cooler and drier, send it back for a full refund. No restocking fee, no hassle. Every unit is also covered by a 1-year warranty, and if anything ever goes wrong, a real person replaces it fast.

✓ 100-night money-back trial ✓ 1-year warranty ✓ Free return shipping

Your questions, answered honestly

Is this just "cool to the touch" like cooling sheets?+

No, and that is the whole point. Cooling fabrics only feel cool for a few minutes, then trap your heat. Cooly runs chilled water through the pad and actively carries heat away from your body all night, so the bed stays genuinely cold until morning.

How cold does it actually get?+

Cooly cools down to about 55°F and holds it. Most people run it somewhere in the middle and add a light blanket, because on the higher settings it gets cold enough that you will want one.

I read horror stories about leaks. Does it leak?+

Leaks are the number-one complaint with cheap older units, so we hear this a lot. Cooly is built to sit level and hold its seal, and we suggest resting the unit on the small tray it ships with as a simple backstop. If anything ever goes wrong, the 1-year warranty replaces it fast.

How hard is the cleaning and upkeep?+

Much easier than people fear. Once a week or two you drain the tank and give it a quick rinse. It takes about five minutes, roughly the same effort as changing your sheets. Using filtered or distilled water makes it even easier.

Is it loud? Will it wake my partner?+

No. The pump is nearly silent and the fan is a soft white-noise hum. Most people say they forget it is on, and light-sleeping partners are not bothered by it.

Does it work if my room is hot?+

Yes. Because Cooly cools your body directly instead of the whole room, it keeps you cold even when the AC cannot keep up, or when you would rather not run the AC at all.

Can each side of the bed be a different temperature?+

Yes on Queen and King, which include two separate units, one per side. One of you can sleep icy cold while the other stays cozy, with no compromise.

Do I need a new mattress or an app?+

Neither. The pad slides under your fitted sheet on the mattress you already own, and you control it with buttons and a remote. No app, no account, no subscription, ever.

What if it does not work for me?+

Sleep on it for 100 nights. If you are not cooler and drier, send it back for a full refund with free return shipping. You risk nothing by trying it.

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