Make sure this fits by entering your model number.; Polyester Imported KEEPS YOU COOL AND DRY: Sealy’s Posturepedic Cooling Comfort Fitted Mattress Protector is equipped with wicking technology that protects your mattress against unwanted moisture while keeping you cool, dry, and comfortable as you sleep. Half foam, half springs, total hybrid peace of mind. The all-new Sealy Posturepedic PROBACK Plus combines two of our best sleep technologies into one luxurious night’s sleep. .