The new Thermo-Kitty Hut™ also includes a dual thermostat 4-watt heating unit that warms the surface of the bed to a cat pleasing 102 degrees when in use. The flexible hood allows you to position it up or down, curved or straight. The Thermo-Kitty Hut™ is 18” in diameter and is available in 2 colors. Indoor use only. UL listed.