The K&H Extreme Weather Kitty Heated Pad outdoor heated kitty pad with cover is an essential source of warmth for any cat that spends time outdoors. Its internal thermostat keeps the surface nice and warm even in the coldest of temperatures and includes a free fleece cover. Place in a shed, garage, barn or anywhere your outdoor kitties spend time. It's made of rugged ABS plastic and an optional free fleece cover can be used for even more feline pleasing comfort. Recommended for indoor and outdoor use. This outdoor heated cat bed has been tested & certified by MET Labs to exceed USA/CA electrical safety standards. Measures 12.5 X 18.5 inches and uses 40 watts.