UltraCool Pillow
UltraCool Pillow
UltraCool Pillow
UltraCool Pillow
UltraCool Pillow
Corner fabric detail of a Slumber Cloud UltraCool Pillow
UltraCool Pillow
A Slumber Cloud UltraCool Pillow on a yellow background
A gif of the Adjustable UltraCool Pillow being unzipped on a cream background
UltraCool Pillow
The inserts of the Slumber Cloud Adjustable UltraCool Pillow on a cream background
The zippered gusset on a Slumber Cloud Adjustable UltraCool Pillow on a cream background
The zipper opening on a Slumber Cloud Adjustable UltraCool Pillow on a cream background
A young woman compressing the 100% down alternative fiber-fill insert of the Slumber Cloud Adjustable UltraCool Pillow on a cream background
A woman squeezing the memory foam insert of the Slumber Cloud Adjustable UltraCool Pillow
Up to -25% Free Shipping & 60 Night Risk Free Trial

UltraCool Pillow

Hypoallergenic Fill Filled In USA NASA Cooling Technology
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Firmness Guide:Soft/Medium is 100% down alternative fiberfill, ideal for stomach/back sleepers
$142.40 $178.00
Discover the ultimate sleep solution with our NASA-engineered UltraCool Pillow. Named "Best Cooling Pillow" by Good Housekeeping, it features premium Outlast® technology that actively regulates temperature throughout the night. Choose from two firmness levels for perfect neck support while reducing heat buildup by up to 50%. Experience cooler, deeper sleep tonight.
Product Comparison

- 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 $89.00
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.
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.
How it works

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%.
Read the Outlast Humidity Sleep Study
Slumber Cloud icon of a sleep mask.

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%.
Read The Outlast Heat Sleep Study
"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.

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.

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.

Over 30,000 happy sleepers have spoken

We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews

★ ★ ★ ★ ★
These sheets and duvet cover are so comfy and cozy! They really do keep me cooler at nights too; which I've been fighting with my entire life - I'm an overheater! I already recommended them to my best friend.
— Kristi M.
★ ★ ★ ★ ★
Perfect for California Summer! I love the lightweight and how well it regulates heat, so that we are not hot nor cold. It is perfection. I was hesitant because of the cost but glad that I decided to purchase it
— Esther B.
★ ★ ★ ★ ★
I have bought countless pillows, new bed, different positions, tried couch, bought new couch. Got this ultra cool pillow, so soft, literally feels like sleeping on a nice cool cloud. Slept the full night, first full night in over a year.
— Sagar J.
"For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night."
Real Simple
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