Our water- and stain-resistant HeatComfortTM mattress pad pre-warms the sheets before you get in. Plus, you can save on energy and heating bills*. Simply turn down the thermostat while you sleep. Queen and King allow couples to adjust the comfort level individually on their side of the bed. With 11 warmth settings and a 10-hour automatic shut-off. Low voltage and UL® listed for safety. 100% polyester pockets slide on, stay tucked and fit mattresses up to 18" deep. 230-count, 100% polyester ticking, top is 80% polyester/20% cotton. With 4.5 oz. of 100% polyester fill. Not recommended for use with adjustable beds. *Turn on your HeatComfort Mattress Pad and you can save up to 10% a year if you set your thermostat back 10-15% for 8 hours.Twin: one controller Double: one controller Queen: two controllers King: two controllers