This is a well built and fairly easy to assemble cat tree. We have a kitten and a somewhat chubby 8year old cat. They both enjoy the upper half, but our older cat has trouble maneuvering around the enclosed cubbyhole. I wish there was more of a stair step design to this so he would have an easier time getting up and down it (the ladder might be more of a hindrance; we might even take it off). Our kitten just uses his claws and climbs.