With the addition of this XL Pet Bed Warmer, any cat or dog bed can provide comfort and warmth to your pet. It can be placed inside virtually any pet bed and is easy to use. Just plug it in! Dual thermostats regulate temperature using very low wattage, ensuring efficient energy use while keeping your pet's bed perfectly cozy. Waterproof and designed for indoor use, this bed warmer will quickly become your cat or dog's favorite place to nap. Experience quality, comfort, and warmth for your pet.