Sunbeam 2-in-1 Reversible 365 Mattress Pad provides you with cozy warmth on chilly nights and when the season's change, flip it over for cooler sleep on warmer nights. This unique 39" x 75" Twin size mattress pad can be reversed to be used all year long, makes a great addition to any bedroom and includes a built-in skirt that stretches to fit mattress depths of up to 18". Heated side features an easy-to-use dial controller with 12 heat settings for customized warmth and comfort, and a 12-hour auto shut-off feature for added peace of mind. Indulge in a warm and restful night's sleep while you stay toasty and comfortable falling asleep on the extra-soft quilted sherpa top layer. The heated wires are made with premium components developed with a wire technology that senses and adjusts for continuous heat and safe operation. Cooling side features a cool touch fabric that releases heat rapidly for a cooler night's sleep. When ready to clean, simply detach the controller from the mattress pad and place into the washing machine for easy care, stays soft after many washes and includes a 5-year limited warranty.