Made of washable faux suede with a soft fleece top. Three separate layers of foam mean customizable comfort for pet. Put heating pad in top layer for more warmth, or place heating pad in bottom layer for low, gentle heat. Thermostatically controlled for just the right amount of heat, without overheating. Great in garages, basements or soothing warmth for older pets. Warmer plugs into any standard 120 Volt outlet, but only provides 24 Volts to the heater for safety. Not LOCKNDRY compatible. cULus Listed. One year warranty.