Our Beautyrest heated mattress pad contains Secure Comfort technology, which is designed to virtually eliminate Electromagnetic Field emissions. The soft flexible wires and quilted top ensure your comfort. The fitted skirt is designed to create a perfect fit and fits up to a 17" mattress. Our heated mattress pad is machine washable, with a 10 hour auto shut off, 5 setting temperature control. Twin and Full size have one controller. Features: Content: 200TC 60/40 Cotton/Poly Dimensions: 39 x 75 1 Heat temp controller 5 Heat Settings 10 Hour Automatic Shut Off Machine Washable Beautyrest 200TC Heated Mattress Pad Twin