My 8 lb cat liked this, but my 11 lb cat found it to be too cramped. Hes picky though so thats not the reason for the 2 stars. The reason is because its flimsy. I thought they would be able to lay inside or on top, but there is no frame to hold it up so as soon as they jump on it, the thing collapses. That wasnt clear in the description. I wouldnt have bought this product if I had known,  but its not worth my time to send it back so I just left it out for the cats do use it or not.