The Tempur-Pedic Cool Luxury Sheet Set is the perfect way to refresh your bedding. The 400-thread count luxurious fabric is soft as silk and cooler than cotton. This sheet set is made with a blend of Tencel™ and Refibra™ technology that improve breathability through moisture absorption and release to keep you comfortable throughout the night. These sheets fit mattresses up to 16-inches deep. They are machine washable for easy care and continued use.