Comfort, luxury, protection from the cold and durability... our Outdoor Heated Kitty A-Frame has it all! Utilizing our removable Lectro-Soft Outdoor Heated Pad as the source for warmth, this is the perfect heated shelter for any outdoor cat. 600 denier nylon with a vinyl backing makes this waterproof and tough. The 2 exits to keep cats warm, safe, and dry. Easy to assemble with hook-and-loop closures. Simply put it in any sheltered area or outdoor structure and plug it in. This house can be used indoors and outdoors. It is also safe and energy efficient and large enough for multiple cats. Specifications Outside Dimensions 20.5"x35"x20" Inside Dimensions 19"x24' Sleep Pad Dimensions 23.5"x19" 40 Watt Heated Bed Construction 600 Denier Nylon with Vinyl Backing Origin Country China