King size Feel Cooler® cooling mattress pad 78" x 80" * Temperature Regulating Technology To Help You Sleep Cooler * Deep Pockets. Fits all mattresses up to 20" thick. * 30 Day Return Guarantee. Try it - If you don"t like it return it within the 30 days and get a refund for the purchase price minus actual shipping costs. * 100% hypoallergenic polyester fiberfill.