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★★★★★ 4.8 · 341 verified cold sleepers
Bed Cooling System · The Frost Line
FYROST Glacier™
The cold side of the pillow. All night. Whole bed.
$199.00$349.00Save 42%
Free US shipping · ships in 24h.
- Circulates chilled water through a soft woven pad under your fitted sheet
- Holds your bed degrees below room temperature from lights-out to alarm
- Whisper-quiet chiller tower — quieter than a ceiling fan
- ~80 W draw vs ~1,000 W of air-conditioning the whole room
Size: Single
✓ Free Shipping✓ 60-Night Trial✓ 2-Year Warranty
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Cooler beds are the most studied sleep upgrade there is
Reported in sleep-temperature research
−58%
Night-time wake-ups when sleeping cool
15 min
Faster sleep onset at lower bed temp
3 AM
The sweat wake-up Glacier deletes
Figures reflect published research on sleep temperature regulation. Individual results vary. Glacier is a comfort device, not a medical treatment.
Built for the 3AM wake-up
You don't have a sleep problem. You have a heat problem.
Your core temperature has to drop for deep sleep to happen — but mattresses trap heat, partners radiate it, and summer never asks permission. Glacier pulls the heat away so your body can do what it's built to do at night.
One system · Six shifts
What sleeping cold actually fixes
01
Fall Asleep Faster
A cool bed triggers the core-temperature drop that starts sleep.
02
Kill the 3AM Sweat
Continuous circulation means no heat build-up by the small hours.
03
Deeper Sleep Stages
Cooler bodies spend more time in slow-wave and REM sleep.
04
One-Sided Peace
Single pad cools your side only — your partner keeps their duvet.
05
Summer-Proof
Sleep cold in July without freezing the whole room.
06
Tiny Power Bill
~80 W beats running 1,000 W of air-con all night, every night.
How it works
Set it up before bed. Four steps.
STEP 01
Slide the pad in
Under your fitted sheet — single side or whole bed.
STEP 02
Fill the tower
Top-fill reservoir with visible water level, right on the nightstand.
STEP 03
Set your temp
One dial. No app required at 2AM.
STEP 04
Sleep cold
The chiller holds your set temperature until the alarm.
Why Glacier
The $1,199 cold-bed experience — for $199
| FYROST Glacier | Chilipad | Eight Sleep | BedJet | |
|---|---|---|---|---|
| Price | $199.00 | $1,199 | $2,499 | $499 |
| Active water cooling | Yes | Yes | Yes | No |
| Cools below room temperature | Yes | Yes | Yes | No |
| Works with your current mattress | Yes | Yes | No | Yes |
| No subscription required | Yes | Yes | No | Yes |
| One-dial control (no app needed) | Yes | No | No | No |
| Warranty | 2 years | 1 year | 1 year | 1 year |
341 five-star cold sleepers
The 3AM wake-up, deleted
★★★★★
"I run hot at night, always have. This is the first thing that actually fixed the 3AM soaked-sheets wake-up. First. Thing. Ever."
Daniel R. · Verified Buyer
★★★★★
"We looked at Eight Sleep for months but couldn't stomach $2,500 plus a subscription. Glacier does the one thing we wanted for a tenth of it."
Amy W. · Verified Buyer
★★★★★
"It's genuinely quiet — quieter than our fan. Fill it, set the dial, forget it. My wife stole the single so we bought the double."
Chris P. · Verified Buyer
Good to know
Questions, answered
How cold does it actually get?
Glacier circulates chilled water that holds the pad several degrees below room temperature — most people run 6°+ below ambient, which is a dramatic difference under a duvet. It's a comfort device: think 'cold side of the pillow', not a refrigerator.
Is it loud?
No — the tower is whisper-quiet, quieter than a ceiling fan on low. It sits on a nightstand or the floor beside the bed. Most people say the faint water sound helps them sleep.
Single or Double?
Single cools one side of the bed — perfect if your partner runs cold. Double covers the full width of a queen/king so you both sleep cool. The pad sits invisibly under your fitted sheet.
How much water and power does it use?
Fill the reservoir with regular water — a fill lasts many nights, with a visible level window. It draws roughly 80 W, a fraction of running air-conditioning overnight.
How do I clean it?
The woven pad is machine-washable. Rinse the reservoir every couple of weeks, or add a capful of hydrogen peroxide monthly to keep the loop fresh.
What if it's not for me?
Sleep on it for up to 60 nights. If your nights aren't noticeably cooler and deeper, return it for a full refund. The chiller carries a 2-year warranty.
60
NIGHTS
The FYROST promise
Try it 60 nights. Love it, or your money back.
Sleep on Glacier for two full months, through the hottest nights you've got. If you're still waking up sweating, email us for a full refund — no restocking fees, no awkward questions.
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Realhuman support
Everything you need — in one box
Chiller Tower
Cooling PadYour size
Connection Hoses
Quick-Start Guide
Fill with water, set your temperature, sleep cold — tonight.
Never meet 3AM again.
Join hundreds of hot sleepers who turned their bed into the cold side of the pillow.
Free shipping · 60-night trial · 2-year warranty