While the product is nicely constructed for the most part. it was difficult for one person to assemble by themself due to the way the sides easily kept folding back down on themselves. it was a bit of frustrating experience.

This cage, is too confined to be called a "playpen". as you can see there are 3 narrow shelves, this does not allow any play space for cats to romp around in.  I have 3 cats, and they were pretty cramped in it. have the doors on both upper and lower level is a good idea, but because of the way they open and their size, it does not allow for any kitty self to be wide enough for a cat to stretch out on. I would not put more than 2 cats in it, and then for short period of time only!