Advanced engineering for strength and ease of assembly, with an attractive oval design. Dual thermostat heating unit is buried deep within super soft orthopedic foam and is removable for year round comfort. Heater is pre-set to keep the sleeping surface 12 to 15 degrees above ambient air temperature and warms when kitty is on it. No tools necessary for installation when using the provided velcro fasteners. Screws are also included for a more permanent attachment. One year limited warranty. 14 X 24 BEIGE