The Thermo-Kitty Lounger offers super thick orthopedic foam for the maximum cushioning available in a cat bed. The dual thermostatically controlled 4 watt heater warms to 102 degrees when in use, and remains 10-15 degrees above ambient air temperature when not in use. The Thermo-Kitty Lounger is available in two colors to match any decor’. Indoor use only. UL listed.