So we have two cats one on the smaller or lighter side and the other one is about 17 lb and a big boy. And Ive been looking for a cat tree for them for at least a year and settled on this one and Im glad I did. Its perfect height for them and plenty of things for them to climb on or lay on. I put it together myself in about 30 to 45 minutes but I wasnt in a rush so it probably could get put together quicker than that. Everything was numbered so made finding the correct part easy. Some of the top round platforms are a little loose as far as it kind of moves and sways when theyre climbing up there but they do send an attachment to attach it to a wall so it doesnt tip over which would be great except we have it in front of our window so theres nothing to screw it into. So my bigger cat hasnt spent a lot of time climbing up and stays towards the lower level so Im not really sure how thats going to play out but I would definitely recommend this to someone else.