50% Off Sitewide
Better than Black Friday. This 50% off offer won’t get better later—shop holiday gifts, guest-ready sheets and everyday comfort now.
November 6–13 · Ends 9am MST. Bath 20% off. Exclusions apply.
Shop Early Black FridayEarly Black Friday
November 6–13 · Ends 9am MST
50% off original prices. Bath 20% off. Excludes Avec, Core Mattress Pad, loungewear, UltraCool Comforter and select final-sale items.
Shop the SaleHoliday favorites. Our best offer.
Most-loved sheets, cooling pillows and cozy layers—for gifting, hosting and you.
For guests, gifts & great sleep
Thoughtful upgrades for the holiday season—and every night after.
Top mover · PillowsThe pillow hot sleepers swear by
Outlast® fabric on both sides pulls heat away from your head and neck all night. UltraCool Pillows are 50% off original prices.
Shop all in the sale
Top mover · SheetsSilky TENCEL™ sheets that sleep cool
Our best-selling sheet set wove Outlast® directly into silky TENCEL™. Absorbs heat when you run hot, releases it as you cool. Performance TENCEL™ sheet sets are 50% off original prices.
Shop all in the sale
Top mover · AvecRelaxed linen, lived-in comfort
Avec is our sister line of linen-blend bedding — breathable, effortless and made to be slept in. An effortless gift for anyone who loves a beautifully made bed.
Shop all in the saleCooling Pillows · 50% Off
UltraCool, Body & Ziggy
50% offPerformance Bedding
Cotton, Linen & TENCEL™ sheets
50% off
The technology
Born for space. Built for great sleep.
Outlast® material was originally developed for NASA spacesuits to protect astronauts from wild temperature swings in orbit. We wove the same phase-change technology into every sheet, comforter, pillow and pad we make.
Absorb
Microcapsules soak up excess body heat the moment you run hot — before it turns into sweat.
Store
That heat is stored inside the fabric, holding your microclimate at the ideal sleep temperature.
Release
As you cool down, the stored warmth flows back out — no chills, no 3am blanket juggling.
- Clinically shown to reduce night sweats by up to 50%*
- Improves sleep efficiency by 20% — more time in deep sleep*
- The only bedding brand certified with Outlast® space technology
- Designed & shipped from Denver, Colorado
*Outlast Humidity & Heat Sleep Studies
How It WorksReal Simple
“For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night.”
Early Black Friday
50% Off
Sitewide
Give better sleep this holiday. Save on cooling favorites November 6–13. Bath 20% off. Excludes Avec, Core Mattress Pad, loungewear, UltraCool Comforter and select final-sale items.
Shop Now
Why Slumber Cloud
Free US Ground Shipping
Orders ship free, typically within 24 business hours from our Denver warehouse.
30 Night Risk Free Trial
Sleep on it, wash it, put it to the test. Don't love it? Full refund, no questions asked.
Sale Price Match
If it goes on a deeper sale within 30 days, we'll refund the difference.
Award Winning Sleep
Clinically shown to reduce sweat by 50% and improve sleep by 20%.