This is something I am ashamed to say I spent money on--it is just a ramp made out of corrugated cardboard. However, a friend recommended it to me as something her cat enjoyed, so I thought I'd give it a try. My big male cat is obsessed with this ramp. He loves scratching on it and chewing it to shreds. I, on the other hand, don't enjoy cleaning up the tiny bits of cardboard that he spits out, but I will sacrifice for his pleasure. When he's not feeling especially frisky, he also enjoys lounging around on this ramp. It doesn't look comfortable to me, but he'll even sleep on the ramp. Whenever I notice he's not paying much attention to this, I just sprinkle it with a little fresh catnip and he becomes interested in his ramp again. The only thing he doesn't seem to like about this ramp is the small toy that's attached to the top of it. He doesn't seem to even notice it, and I think it looks a little chintzy. I don't understand why cats like things like this, but in the case of my cat, he certainly does appreciate having this ramp around.