Serta Fila heated mattress pad features smart technology to keep your bed cozy and comfortable during the colder season. Furthermore, the soft microfiber material can keep you cozy and comfortable while keeping your mattress clean and fresh. The controller comes with 10 heat settings to choose from and 1-12 hr auto shut off timer to give you confidence for prolong usage. It comes in deep pocket to fit most premium mattresses up to 17" thickness. Mattress pad Queen size or larger will come with 2 controllers and dual temperature feature for each side of the bed. Conveniently machine washable and comes with 5 years warranty