Sale ends in
Limited-time pricing, every size.
UltraCool Pillow
Limited-time sale price — you save $138 on this 2-pack
Free US shipping & 30-night trial
Overview
Features & Benefits

NASA engineered
Premium NASA-engineered Outlast® fabric on both sides fights off heat.
Two firmness levels
Two firmness levels allow for perfect neck support.

Adaptive cooling
Designed to manage heat through your pillowcase.
Materials, Fabric Technology & Care
What it is made from
- 100% polyester knit outer cover with Outlast® Technology coating
- 100% down-alternative polyester fiberfill
How the fabric works
- Premium NASA-engineered Outlast® fabric on both sides fights off heat.
- Two firmness levels allow for perfect neck support.
- Designed to manage heat through your pillowcase.
- OEKO-TEX® STANDARD 100 Certified Technology. Certification Number: 05.0.9235
How to care for it
Basic Care: Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Do not use fabric softener. Only use non-chlorine bleach when needed. Tumble dry low heat until completely dry. Remove from dryer immediately. Do not dry clean. Do not iron.
Pro Tip: Wash this every 2-4 times a year. Keep your pillows fluffy by drying your pillow with tennis balls or dryer balls.
Sizing & Dimensions
Standard - 20” x 26” King - 20” x 36”
Shipping, Returns & Price Match
Free US ground shipping — orders typically ship within 24 business hours from Denver, Colorado. Try it for 30 nights; if you don't love it, return it for a full refund. If it goes on a deeper sale within 30 days, we'll refund the difference.
Made for cooler, deeper sleep
Why you'll love it
Adaptive coolingDesigned to manage heat through your pillowcase.
Inside the product
Materials chosen for cooler, more comfortable sleep.
From what touches your skin to how it performs overnight, every detail below comes directly from this product’s materials and care information.
Materials
- 100% polyester knit outer cover with Outlast® Technology coating
- 100% down-alternative polyester fiberfill
Technology & benefits
- Premium NASA-engineered Outlast® fabric on both sides fights off heat.
- Two firmness levels allow for perfect neck support.
- Designed to manage heat through your pillowcase.
- OEKO-TEX® STANDARD 100 Certified Technology. Certification Number: 05.0.9235
Care
Basic Care: Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Do not use fabric softener. Only use non-chlorine bleach when needed. Tumble dry low heat until completely dry. Remove from dryer immediately. Do not dry clean. Do not iron.
Pro Tip: Wash this every 2-4 times a year. Keep your pillows fluffy by drying your pillow with tennis balls or dryer balls.
What the press says
“For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night.”
— Real Simple
The only NASA-derived bedding
Outlast® technology, originally developed for NASA
Award-winning sleep
Recognized by sleep and home editors
Independently lab tested
Improves sleep by 20%, reduces sweat by 50%
Verified Yotpo reviews
Real ratings from 30K+ sleepers
Good to know
Frequently asked questions
How does this bedding help with temperature?
Outlast® phase-change material absorbs excess body heat as you warm and releases it back as your temperature drops.
Can I wash it at home?
Yes. Follow the care instructions above for this product and avoid high heat to protect the fabric and temperature-regulating finish.
What if it is not right for me?
Eligible products include free US returns and a 30 night risk-free trial, so you can wash it, sleep on it and put it to the test.
Real sleepers, real results
Customer reviews
+30k verified reviews, powered by Yotpo.

Tested, not just claimed
Independent sleep testing on Outlast® bedding.
50%
reduction in sweat
20%
improvement in sleep
30K+
happy sleepers
