The Cool Side™ Pillowcase by Coop Sleep Goods is a cooling pillowcase made for hot sleepers, priced at $29.92 (regularly $30.00, currently 25% off). It is woven from Coop's exclusive Lulltra™ Cool fabric—a bamboo-derived viscose rayon and polyester blend that is 1.5x denser than standard fabric at 400 gsm—designed to regulate body temperature and wick away heat and moisture with an always-cool, silky jacquard surface. It comes in Classic, Crescent, and Cut-Out shapes with sizes for Queen (19" x 29"), King (19" x 35"), and Toddler (13" x 19") pillows, is OEKO-TEX® Standard 100 certified and hypoallergenic, and is machine washable. It is backed by Coop's 100-Night Sleep Better Guarantee and rated 4.6/5 stars from 346 reviews.
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Unlike cotton or silk pillowcases, the Cool Side™ uses Lulltra™ Cool fabric—a blend of bamboo-derived viscose rayon and polyester that is 1.5x denser than Coop's standard fabric at 400 gsm. That heavyweight jacquard weave maintains a cool, silky feel while wicking moisture and body heat away, and it is designed to be slept on directly rather than covered by another pillowcase.
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What customers say
Rated 4.6/5 stars based on 346 reviews. Reviewers highlight the cooling effect and comfort:
According to Coop, 86% of users report sleeping better with Coop.
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