Bought this pen for my puppy.   It worked out when he was still very young.    Did the job of keeping him out of mischief when not being supervised.   I would not leave a young dog in there when no one home.   Crate better for that.   
Good for taking out  in yard also if needing to keep pup in one area.

Pros: Good puppy corral or small dog
Cons: Not strong enough for large or bigger, strong dog