The Polar Aurora Dog Playpen House is a heavy duty, durable kennel that is perfect for keeping your dogs safe and secure. Made of steel bars and wire mesh that are welded before coating, this kennel provides added rust and corrosion protection. The roof is made of a waterproof material that is resistant to tearing, cracking, fading, or peeling. The sturdy elastic cords that make up the walls of the kennel will not break or stretch, and they hold the kennel securely together.