We were really impressed with this pen.  I bought it to keep my 17 year old dog safe in his last few months. I just wish we had bought it a couple of years earlier. It was so easy to set up or take apart with the poles that slide in & out. The only feature that I feel is a little sub-par are the screw-type closures on the door.  Seems like they might be able to come up with a sturdier alternative.