the size is perfect for my Fur babies but there is a problem, the cat trees are being delivered cracked and broken. I contacted the supplier and they resent out replacement parts, what for it. it's no shocker they are broken too. I'm going to go out on a limb here and suggest that it might be the shipper who is breaking these item instead, I would not believe the seller would send out damaged goods. I going to contact Trixie and see if I can get the bottom cubbies and the top cubbies replaced . !!! again. I like the design a lot for my 8 kitties it was nice because it is not to tall but does allow them to climb, the only problem is a broken side or front walls on the cubbies means it it a tipping hazard. I feel I should mention the carrier used for these was FedEX, when I called they were rude and not helpful at all. this is strike two, three times and your out right I will been sending them back.