Our Ultracool® Pillow Protector is crafted with a luxuriously soft 100% Supima® cotton percale cover, which is cool and breathable, inherently durable and machine washable. Pillow protectors can lengthen the life of your pillow and protect from any stains, or daily wear and tear. Cover: 100% Supima® cotton percale Piping: polyester satin cover with internal cord, 55% polyester, 45% cotton Note: For health and hygiene reasons, pillows, quilts, underlays, bed toppers, mattress and pillow protectors cannot be returned for a refund or exchange unless faulty or not as ordered.