We bought this as a kind of stepping stool to a higher cat tree for our 10 year old cat, Lester.  He doesn't jump up and down so well anymore.  It's perfect for that but it's also a nice little cat tree in it's own right.  The puzzle box is an awesome place to put treats and it's pretty solid.  The shelves are a little smaller than I expected.  I should have really visualized the measurements, but overall it works for what we bought it for.