Dual thermostats provide the perfect amount of pet-pleasing warmth while offering you the safety and efficiency of a low wattage heater. Because of its unique design, the entire cover is washable. All KH heated beds and pads feature dual thermostats and are designed to warm to your pet's normal body temperature when he/she lies on the pad. When your pet is not on the pad, the heat will dissipate into the air and the surface temperature will vary according to the ambient air temperature. nAll KH heated products are thermostatically controlled to heat to 102 F, regardless of the size. Dual thermostat simply means there are two internal thermostats that will keep the surface of the bed at 10-15 F above ambient air temperature when your pet is not on the bed. When your pet lies on the bed, it will warm to about 102 F. Features n Removable heater, washable coversn Warms to pet's normal body temperature when in usen MET Listedn 6 wattsItem Details n Size Mediumn Dimensions 26 x 20 x 5n Color Sage