Protex heated mattress pad is made with a premium 260 thread count 100percent cotton quilted top and premium polyester fiber fill. It also have a 15 h stretch to fit elastized attached bed skirt. The pad a 3 personal heat settings for ultimate temperature control. It I also has a 8 hour auto off so you dont forget to turn it off in the morning. The mattress pad has a single controlled for twin and fulls sizes and 2 controller for both the Queen and King for personalized temperature control. The twins is a 39x75 size and has 26 oz. of polyester fiber fill. The Full measures 54x75 hes and has 38 oz. of fiber fill. The Queen is 60x80 hes and has 48 oz. of fiber fill and the King is 78x80 hes and has 58 oz. of fiber fill