Warm & Insulated for Freezing Weather: Keep felines cozy in sub-zero temps with our heated cat house for outsidea versatile heated pet house! 5-layer aluminum foil insulation + UL-tested waterproof heating pad (43F-118F) locks in heat; chew-resistant cord for safety. Two sizes: L (25.6″16.5″18″) for 2 cats/larger breeds; S (17″13″17.1″) for 1 cat/small pets. Perfect for porches, yards, barnsreliable winter warmth!