Just got this for my 10 week old kitten, and she was immediately drawn in as it was being assembled. She absolutely adores the hanging ball (although with all the attention it is getting, I am not sure how long it will stay on the structure) The activity box at the bottom is okay, but the holes allow the balls inside to escape too often, and they just end up being played with outside of the box as opposed to inside. The size of this tree is great for my kitten, although I would agree with the comments below that the upper perch is much to small for a larger cat. I can see my kitten very quickly growing out of that, but it is perfect for the time being :)

Overall, very happy with my purchase! It even arrived two days early :)