We ha e only had these for three days and Tanner gave it a try the first day. It is really poufy!  He's like walking on a trampoline! I'm going to try to remove some of the filling today and see of that will help. Otherwise, I like the cover, it seems sturdy and washable with a good zipper. It is big but seems right for him to stretch out of he ever gets on it. We'll see how it goes from here.