The new Thermo Heated Cat 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 on the Heated Cat hut allows you to position it up or down, curved or straight. The Thermo Cat Hut is 18" in diameter and is available in 2 colors. Indoor use only. UL listed. Unlike a "heating pad" the Thermo products will not feel extremely warm to your touch. It is made to keep your pet comfortable not to overheat your pet.