Sunbeam Twin XL Imperial Comfort Mattress Pad protects the mattress while providing warmth to cold dorm room beds. Perfect for back-to-school programs; 5" longer than standard twin size heated mattress pads to fit a dorm size bed; Easy set up and care; machine washable; 140 Thread Count 50% Cotton/50% Polyester Top; Channeled Quilt Design with 5 oz fill; Skirt fits up to 18" mattresses; Comfort Set Digital Control with 10 heat settings -- 10-hr Auto-off.