Since I’m not using this product outdoors, I decided to get the unheated version. The material is super sturdy and thick. I found it tough to match up the hook-and-loop parts for the roof, but since I don’t know how else it could have been constructed, it didn’t affect my star rating. There’s a flap/entry in both the front and back, which is useful so the cat can have the ability to escape threat if it felt any from either side. Tip: The instructions do suggest placing the house inside a sheltered area if using outdoors.