The full grown cat jumps up and really only likes the sitting area with the end to kind of hold him in. The little kitten will actually climb up the stairs and go in the tunnel type box and basically jump everywhere. They love the scratching posts too. Great purchase.

Since the kitten is getting bigger, we are going to buy another one with two sitting areas with the edges verses just the flat area like this on has on top.

But overall, I think this is GREAT.