*The Cat House comes with a heated mattress to ensure your cat is warm and cozy! We also offer cypress fiber bedspreads for your cat's warmth and comfort. *Our cat hideaway is made of weather-resistant material so you can use it anywhere! It can be used both indoors and outdoors. *When the weather takes a turn for the worse, this heatable cat bed cave provides warm shelter for your cat. *The cat bed den has two exits so it's easy to escape next door and is predator-proof. *Zipper and hook-and-loop fasteners are designed for convenience and can be installed without any tools.