I ordered this item because I'd just adopted a kitten and have 2 adult cats already. I wanted the kitten to have plenty of stimulus, especially after I go back to work after the "integration" period, and this certainly has plenty to keep a cat occupied. It's a fair sized thing, and is going to go up at the window so that (hopefully) the cats can sit and enjoy an elevated view of the world. At the moment the 2 adult cats haven't used it (but they're not yet fully allowed into the room where the kitten has been so it's early days). The kitten, however - who is only 9 weeks old - is screeching up and down it like a pro, right the way to the top! She's taken to the curved platform at the very top and sits looking down on everything. She also sleeps there too (I think she feels secure being so very high up). Another favourite is the mouse - she hurls herself at the sisal post and climbs up it, sits on the top, then attacks the mouse on the string below. Like another reviewer I can't comment on durability, but it seems well-made enough and well enough balanced to support an adult cat jumping up and down on it. At the moment, I'm very glad I bought it! (p.s. - quite easy to assemble too).