With the addition of a K&H Pet Bed Warmer, any pet bed can provide comfort and warmth. It can be placed inside virtually any pet bed and is easy to use. The Thermo Pet Bed Warmer™ is controlled by dual thermostats to provide the perfect temperature. The heater is set to keep the surface 12 to 15° above the air temperature and warms to a pleasant 102° degrees when your pet lies on it.