The Thermo-Kitty Deluxe Leopard Heated Cat Bed has a dual thermostat, 4 watt heating unit buried within its thick premium polyfil pillow base. It warms the surface 10-15 degrees above ambient air temperature when not in use. When your pet lies in the bed it warms to your pet's normal body temperature to keep them warm and cozy. The washable cover is available in your choice of two colors and will be attractive in any room of your home. Indoor use only, , one year warranty.