Core Down Alternative Pillow - Open Box

$59.00

"Cool" is the new standard. This classic cotton cover has been infused with technology developed for NASA so there's no more flipping to the "cool side". It's love at first squeeze.

 

Click here to see how this product compares to our other pillows and pillow covers.

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.

Core Down Alternative Pillow - Open Box
From $59.00
The Slumber Cloud Core Down Alternative Pillow propped on a yellow background
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.

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%.
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%.

FAQs

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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