K&H Pet Products Ortho Thermo-Bed - Orthopedic Heated Dog Bed - MET Safety Listed Internal thermostat warms the surface of this bed to your pet's normal body temperature when your pet lies on the bed. Warmer is removable for year round use Cover is removable and washable Uses only 6 watts and is MET Listed Stay-put non slip fabric for stability on the bottom One year limited warranty This 17" x 27" bed uses only 6 watts Two layers of orthopedic foam, so thick even the largest dogs will not bottom out. Dual thermostatically controlled to warm to your pet's natural body temperature when in use Removable heater for washing Non-Slip Bottom for stability