A Slumber Cloud UltraCool Pillow on a yellow background
Corner fabric detail of a Slumber Cloud UltraCool Pillow
UltraCool Pillow
A woman inserting a Slumber Cloud UltraCool Pillow into an Essential Pillowcase
A woman smiling and lying on a couch and holding a Slumber Cloud UltraCool Pillow
Up to -35% Free Shipping & 60 Night Risk Free Trial

UltraCool Pillow

Hypoallergenic Fill Made In USA NASA Cooling Technology

Experience a cool night's sleep with our UltraCool Pillow, named "Best Cooling Pillow" by Good Housekeeping.

Product Comparison
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$109.00 $158.00you save $49.00
Pairs well with..
The Slumber Cloud Performance Pillow Cover made with Outlast® temperature regulation technology and Tencel to help you stay cool through the night.
From $59.00
Performance Pillow Covers

- 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

- 100% polyester knit outer cover with Outlast® Technology coating

- 100% down-alternative polyester fiberfill

Standard - 20” x 26”
King - 20” x 36”

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.

All U.S. orders are shipped right to your door, free of charge.

Sleep on it, wash it, and really put it to the test for 60 nights! If you don’t love your new bedding, just return it for a full refund. No questions asked!

*Final Sale items and colors are not eligible for return, exchange, or the 60 Night Trial Period.

UltraCool Pillow
On Sale from $109.00

Why You'll Love It:

No more flipping to the cool side.

Cutting-Edge Cooling

The UltraCool Pillow puts you in direct contact with Outlast® technology for better performance and puts an end to flipping to the cool side.

Neck Support

For Stomach Sleepers, we recommend our Soft/Medium. For Side Sleepers and Back Sleepers, we recommend our Medium/Firm.

Lab Tested & Award Winning Quality

The UltraCool Pillow fabric has been lab tested for quality you can count on, with the fabric having 20,000+ passes in abrasion testing.

Slumber Cloud Pillow & Cover Comparisons

All pillow options are designed to help you sleep cooler and more comfortable with our signature temperature regulating technologies. However, it's important to choose the product that best suits your sleeping needs. Below is a quick overview of each option to help you in this decision making:
UltraCool Pillow

Cool to the touch. Adaptive

Core Pillow

Cooling cotton. Structured. Classic.

Performance Pillow Cover

Zips on to pillow. Airy + breathable. Dual technologies
Detailed view of the outer fabric on the Slumber Cloud UltraCool Pillow
A close up shot of the Slumber Cloud Core Down Alternative Pillow
A close up of the Slumber Cloud Performance Pillow Cover Set made with Outlast temperature regulation technology on a moisture wicking fabric

Pillow Firmness Overview

Pick your firmness based on your typical sleeping position.

Soft / Medium

The soft-medium pillow offers the perfect support for those that prefer to sleep on their stomach and back.

Medium / Firm

The medium-firm pillow is recommended for those who regularly sleep on their side and back.

A better night’s sleep because of science.

It’s a fabric designed for NASA spacesuits up where temperatures change by 500 degrees. We think it can handle your bedroom. Learn More

The Only NASA Bedding

Our bedding utilizes Outlast®, the world’s only textile technology to have received the Certified Space Technology™ quality mark by the renowned Space Foundation.

Reduces Sweat By 50%

Our bedding provides proactive heat and moisture management, clinically proven to reduce night sweats by up to 50%. *Outlast Humidity Sleep Study

Improves Deep Sleep By 20%

Our bedding adapts to the ideal temperature of both hot and cold sleepers, proven to decrease tossing & turning and increase sleep efficiency by 20%.*Outlast Heat Sleep Study

Us vs Them

Slumber Cloud Cooling Bedding
Other "Cooling" Bamboo Products (like Buffy & Sleep Number)
Traditional Bedding (like Parachute & Brooklinen)
Proactive Temperature Regulation ?
Yes
No
No
Manages Temperature Fluctuations ?
Yes
Yes
No
Ideal for Thermally Incompatible Couples ?
Yes
No
No
Moisture Wicking Capabilities ?
Yes
Yes
No
Breathability ?
Yes
Yes
No

"It has been a great purchase. I am able to sleep deeply without waking up anymore from a hot pillow."

- Eleni T.

"This pillow is our favorite purchase. It is chill to the touch straight out of the box. It definitely seems to be doing what it claims. I highly recommend giving it a try!"

- Teresa M.

"Absolutely love these pillows. They are AS ADVERTISED! Super cool. Super soft. The quality is obvious the moment you take them out of the packaging."

- John M.

FAQs

Pick your firmness based on your typical sleeping position. The soft-medium pillow offers the perfect support for those that prefer to sleep on their stomach and back. The medium-firm pillow is recommended for those who regularly sleep on their side and back.

Yes, we want your bed to look nice and match the rest of your linens so we made sure the technology inside our pillows will still work even when used with a pillowcase.

Slumber Cloud products are designed to help manage heat and humidity build up. It is not an air conditioner with a set temperature degree, but it will react to your temperature all night long to reduce heat build up and manage temperature swings.

True to its name, the UltraCool Pillow is going to be the "cooler" of the two pillow options. Although you will still get great temperature control with the Core Pillow, this is designed more for sleepers who would prefer a traditional pillow with a modern temperature-regulation technology added in.