●【100% Polyester Material】The electric mattress pad is made of 100% premium polyester airlayer fabric and the unique ventilation technology, with tiny air holes on the surface, which is super breathable and skin-friendly. ●【4 Heating Levels and Dual Controllers】This heated mattress pad has 4 levels of temperature control. It is a king-size mattress pad of 78x80 inches, and if two people are using it at the same time, each of them can control the heat level based on their own preference. ●【10H Auto Shut Off】10 hours timing automatic shutdown, the even and continuous heat allows you to sleep all night peacefully; Overheating protection function, automatically cut off the power when the temperature is too high, in case forgetting to turn off the power. ●【Fast Heating & Even Heat】The heating wire is designed with uniform spacing to achieve even heat distribution; the small heating wire is wrapped and fixed in a soft mattress pad to provide ultra-high comfort. Heat up quickly and make you feel warm within 20 minutes. ●【Deep pockets & Machine Washable】360° all around elastic, perfect fit your mattress without being too loose or too tight, fits most mattress up to 8"-21". Machine Wash or Hand Wash in cold water under 86℉ gently.