7 Benefits Hot Sleepers Love About 100% Bamboo Sheets (besides the cool side of the pillow)
Sleep hot? Wake up damp, kick the covers off, flip the pillow at 3AM? Here's why switching to Cosy House 100% Bamboo Viscose Sheets is the easiest upgrade you'll make to your nights.
Try it risk-free for 90 nights
Sheets That Wick, Not Soak
Hot sleepers know the feeling: you fall asleep fine, then wake up at 3AM stuck to the sheets. Polyester and microfiber hold moisture against your skin.
100% Bamboo Viscose wicks moisture away instead of soaking it in, so it isn't held against your skin.
Cool to the Touch the Moment You Get In
How cool a fabric feels on contact is measured with a score called QMax. Higher means cooler.
Our 100% Bamboo Viscose scores 0.42. Regular cotton scores 0.11. You feel it the second your skin hits the sheet.
A Fiber That Breathes All Night
Each 100% Bamboo Viscose fiber is hollow, like thousands of tiny straws. Body heat passes through the sheet instead of building up under you.
It's structural, not a coating: the breathability is built into the fiber itself.
3x Softer Than Cotton
100% Bamboo Viscose is silkier than the highest thread-count Egyptian cotton.
Thread count is a trick: a denser weave just traps more heat. These are soft because of the fiber, not the thread count.
Pay With Your HSA or FSA
Cosy House 100% Bamboo Sheets are HSA/FSA eligible with Truemed, so if you qualify you can use the pre-tax dollars you've already set aside.
Add your sheets to cart, choose Truemed at checkout, answer a short online survey, and pay with your HSA/FSA card. Eligibility is determined through Truemed.
Measurably Cooler, Not Just "Cooling"
Cool-touch score (QMax)
Higher = cooler to the touch.Plenty of sheets call themselves cooling. Ours come with a number: a cool-touch score of 0.42, against 0.11 for cotton.
And 9/10 hot sleepers said they slept cooler in just 1 night.*
*Based on an independent survey conducted in 2026 (n=5,000).
By the numbers
*Based on an independent survey conducted in 2026 (n=5,000).
Trusted by 4.2M+ Sleepers
Over 4.2 million sleepers have made the switch, and 98%* say they won't switch back.
And our refund rate is under 1%.
Why Up to 50% Off? Because 98%* Won't Switch Back.
And our refund rate is under 1%. So we'd rather get these into your bed at up to half price than have you keep sleeping hot.
Today only: up to 50% off with $42 of free gifts on bed sheet orders
Cosy House 100% Bamboo Sheets
The breathable, cool-to-the-touch sheet set made for hot sleepers.
- Cool-touch score 0.42 vs cotton 0.11
- Hollow fiber that breathes all night
- Wicks moisture away
- 3x softer than cotton
- Free Shipping Protection
- 90-night guarantee
- Free 2-Year Warranty
- Free Sleep Mask
Your free gifts: Sleep Mask ($25), Corner Straps ($4), 2-Year Warranty ($7), Free Shipping Protection ($6)
Discount shown on the product page
Refund rate under 1%
Why 100% Bamboo Viscose?
It's simple: it's built for people who sleep hot. The fiber is hollow, so heat passes through. It wicks moisture away instead of soaking it in. And it scores 0.42 on the QMax cool-touch scale, against 0.11 for cotton.
What are they made of?
100% Bamboo Viscose. No polyester or microfiber blended in. OEKO-TEX® certified: tested for harmful substances.
100% Bamboo Viscose vs cotton
Cotton scores 0.11 on the QMax cool-touch scale, against 0.42 for 100% Bamboo Viscose. And thread count is a trick: a higher thread count means a denser weave that traps more heat. 100% Bamboo Viscose is 3x softer than cotton and silkier than the highest thread-count Egyptian cotton.
The science
QMax measures how cool a fabric feels the instant it touches your skin. Higher is cooler. Our 100% Bamboo Viscose scores 0.42; cotton scores 0.11.
The cooling comes from the hollow fiber structure, not a coating. We've invested $5.1 million developing these sheets.
Can I pay with HSA/FSA?
Yes. Our 100% Bamboo Sheets are HSA/FSA eligible with Truemed. Add your sheets to cart, choose Truemed at checkout, answer a short online survey, and pay with your HSA/FSA card. Eligibility is determined through Truemed at checkout.
What if I don't love them?
You get 90 nights to try them in your own bed. If you don't feel the difference, send them back for a full refund.
The Cool-Touch Test
QMax measures how cool a fabric feels on contact. Higher = cooler.
What makes the fabric different
Moisture wicks away instead of soaking into the sheet.
Heat passes through the hollow fiber instead of building up underneath.
QMax cool-touch score 0.42, against 0.11 for cotton.
3x softer than cotton.
Why Hot Sleepers Choose 100% Bamboo Viscose
Lots of sheets say "cooling". Here's how they actually compare.
| Cosy House 100% Bamboo | Cotton sheets | Polyester / microfiber | |
|---|---|---|---|
| Cool-touch score | 0.42 | 0.11 | — |
| Breathable fiber | ✓ | Denser weave, less airflow | ✗ |
| Wicks moisture away | ✓ | — | ✗ Holds moisture |
| Not made from plastic | ✓ | ✓ | ✗ |
| 3x softer than cotton | ✓ | — | — |
| HSA/FSA eligible | With Truemed | — | — |
| $42 of free gifts | With every bed sheet order | — | — |
Made for Every Kind of Hot Sleeper
Why Sleepers Choose Cosy House
- OEKO-TEX® certified: tested for harmful substances
- 90-night money-back guarantee
- Measurably cooler: QMax 0.42 vs cotton 0.11
- HSA/FSA eligible with Truemed