My cat is a 2yr old Russian Blue average weight. This is perfect for him. I set it in the corner next to a window and he perches on the top to watch the kids and the birds throughout the day. He has not torn up the toy buy after 5 months of scratching he's made the top post fray a bit so there's a little mess to clean up. He doesn't use the hideout often, but he is the type that likes to be out in the open instead of hidden. It took me all of 5 mins to have it up and placed where I wanted it. Even if it does not come with instructions it is pretty much self explanatory since the bottom "posts" are all the same size but a bit smaller than the middle and the top post is double ended. It was very simple to put together with few tools. 

Pros: Durable, Easy to put together, Sturdy, Great value for price, East to clean