COOL AND COMFORTABLE - The luxurious knit fabric of the Tempur-Pedic Performance Luxury Mattress Pad uses RapidCool technology and high molecular weight yarn that releases heat, so it instantly feels cool to the touch. When heat does not get trapped, you stay comfortable all night long.. HYPOALLERGENIC - Tempur-Pedic's Performance Luxury Fitted Mattress Pad has an EternaLoft hypoallergenic fill that provides firm but responsive support and is engineered for lasting comfort.. WATERPROOF PROTECTION - The 72" x 84" California King sized Performance Luxury mattress pad is waterproof to protect your mattress from accidental spills and stains.. EASY TO USE: The Performance Luxury Mattress Pad has the Tempur-Ultifit System which combines 2-way stretch top and sides for a great fit on mattresses up to 20 inches. It's machine washable and dryable so you can renew and refresh your bedding for a clean and healthy night's sleep.. EXTEND MATTRESS LIFE: Covering your mattress with a durable and comfortable mattress pad adds a protective layer between the sheets and the mattress which keeps your mattress fresh and clean for years to come!