This elevated cat shelter runs on a waterproof heating pad that raises the interior temperature by about 19°C (66°F) and offers four timer settings of 4, 8, 12, or 24 hours, so you can match warmth to how long your cat typically stays outside. A built-in thermostat adds power-failure, over-temperature, and over-current protection for safe use through winter nights. Aluminum foil and pearl cotton insulation line all six sides to hold in heat, and an included blanket keeps cats' bellies extra cozy. The 600D Oxford cloth shell has a PVC waterproof coating throughout, with a PVC door curtain and chew-proof heating cord for added durability. Five elevated support legs lift the shelter off cold, damp ground, and four wind pegs plus a thickened PP center board keep it stable on grass or muddy terrain; during heavy snowfall, it's best brought indoors. Finished in coffee brown, it measures about 20.5 x 19 x 18.5 inches and weighs roughly 7 pounds.