REST Home Collections Eco-Cool Bamboo Pillow Cover with Zipper (1, King 20"x36") Viscose from Bamboo Made in USA BENEFITS OF REST PILLOW COVERS Cooling, Moister Wicking, Hypoallergenic and Thermoregulating PREMIUM BAMBOO COVERS (60% Polyester & 40% Rayon derived from Bamboo). Our Eco Cool fabric is designed with our ventilated weave allowing your pillows to thermoregulate the body during sleep and provide a cooling effect. REMOVABLE OUTER COVER with zipper allows for easy cleaning as our covers are machine washable. We recommend regular wash cycles and tumble dry low heat when laundering. REST ASSURED 10 YEAR WARRANTY provides customers with piece of mind on all purchases. This warranty covers the products from date of purchase and comes with a 30 Day risk free return policy. If you are not fully satisfied with your pillows we will refund you for the entire purchase price. Cut size measurements - Queen 20 x 26, King 20 x 30