It’s purrrfect for a single kitty desiring more warmth. The unique A-frame design is sure to keep the cold and wind away while providing that much needed energy efficient warmth. Simple to fold up and store away when not in use. Uses only 20 watts. No tools necessary. Includes two removable door flaps. Waterproof patented heated floor system Uses only 20 watts for energy efficiency No tools assembly Indoor/Outdoor use MET Listed - This product exceeds USA and Canadian electrical safety standards