Bought this for our new puppy.  The  Idea was to keep happy in their with toys where no I wasnt gonna be right in the rue were he was. I was hoping this would work for about 4 to 6 months when he started getting bigger.   Unfortunately At 16 weeks puppy is tall enough that when he stands on his hind legs with his paws against the rim of the pen if he bounces forward or pushes, it will tip over and he can get out of it.  It is to lite on top which allows it to tip over.  Not worth the money unless your puppydog will stay small in size.  Would return it if I could.