SELF-WARMING TECHNOLOGY: With self-heating function that doesn't require electricity, dog crate pad is specially designed for pets! The insulating fiber batting and mylar inside work together to trap pet's body heat and keep it locked in, reflecting that captured warmth back to create a cozy nap spot for pets. This innovative technology ensures your pet stays warm and comfortable in the safest way possible. ULTIMATE COMFORT MATERIAL: Dog mats for sleeping are designed with the ultimate comfort in mind. It features a soft, fluffy top layer that provides a cozy surface for napping, a noiseless mylar film that ensures a peaceful sleeping experience, and a cotton filling that provides extra warmth and comfort. The anti-slip bottom keeps the bed in place, making self heating cat bed safer for kittens and puppies to play or crawl on. ZIPPERED REMOVABLE WASHABLE COVER: The removable cover of dog crate mat is a game-changer when it comes to keeping your pet's sleeping area clean and hygienic. With a simple zip, you can easily remove the cover and toss it in the washing machine for a quick and thorough cleaning. The cover is also dryer-friendly, so you can have it back on the bed in no time. NOTE: Wash the cover only. SUITS EVERY CAT AND DOG: Cat warming pad is a perfect gift for your furry family members, ensuring they spend a warm and cozy winter with you. Available in 3 Sizes, the outdoor self warming cat beds are suitable for kittens, cats, puppies, dogs, and also aging or arthritic pets. (Size: S: 15.7x19.7 inches; M: 27.5x19.7 inches; L: 45.3x27.5 inches)