This pet bed is the ultimate in heating and cooling comfort for your pet. The Thermo-Water Bolster Bed by K&H utilizes a warm, water-filled mattress incorporating a plush bolster for what we believe is the most versatile, comfortable pet bed ever made. The feel of sleeping on soft, warm water is ultra-pleasing. Perfect for year-round use. When summer comes, simply remove the heater to create a wonderful cooling bed for those hot days. Comes in fashionable gray paisley to complement many decors. The small bed uses only 20 watts and the medium bed uses 25 only watts. MET listed. Two-year limited warranty.