I needed a puppy pen that would contort to the space available, this pen is perfect! I made a sort of octagon shape, was able to use one less panel by folding it into itself and reclip it w/clips provided.  It's great for small puppies, mine are chihuahua/dachshund and rat terrier mix. I plan on using this pen to keep in my well behaved rat terrier daddy who wouldn't jump on sides to get out, if he did, it would probably tip over.