This heating mattress Polyester pad can provides you with the warmth you want throughout the night with multiple temperature settings and can be set to automatically turn off at any time safe and reliable without the layer blankets and heavy quilts. Keep your bed warm and comfortable from the moment you enter it until you wake up refreshed. Emits virtually 0 electromagnetic radiation and comes in deep pocket to fit most premium mattresses up to 21 thickness. Conveniently machine washable and carry 5 years limited product warranty. Twin and Full come with 1 controller while bigger sizes come with 2 controllers. Multiple size Optional: Twin Full Queen King and California King