Furhaven ThermaNAP Faux Fur Self-Warming Pet Bed Mat. This mat uses no electricity as it contains inner self-warming technology that captures your paw-tner's heat and radiates it back by using an insulating polyester fiber batting core. The lightweight design of this mat makes it ideal for travel and the plush surface ensures a comfortable rest for your companion. It is also machine washable for easy cleaning. Make sure your sidekick gets the comfort and warmth he needs and loves! Key Features: Self-warming mat to keep your furry friend comfortable during cooler evenings. Requires no electricity to keep your paw-tner warm. Insulating polyester fiber batting core captures your companion's heat and radiates it back. Plush surface makes this mat a comfortable place to rest. Portable and machine washable for convenience. Colors: Snow Leopard Leopard Black Espresso Cream Gray Sizes and Dimensions: Small - 22" x 17" x 0.25" Large - 36" x 24" x 0.25"