Dual thermostats regulate the temperature of the heater buried deep within our plush super soft orthopedic foam. Two layers of orthopedic foam are thick and supportive. Even the largest of breeds will not “bottom out”. The heater keeps the surface of the plush faux lambskin cover at an inviting 12 to 15 degrees above ambient air temperature and warms to a cozy 102 degrees F when the pet lies upon the bed. Features include a removable heater which makes this bed perfect for year round use. The cover is removable for washing. UL and CUL listed. This bed is recommended for indoor use.