Perfect for my big & small cats. Before when my fat cat jumped on the top of his kitty condo it leaned under his weight. With this one, both cats can sleep in the top with no issues. They especially love the large hammock. The kids said "the cats went from an apartment to a mansion." Only issue was attaching boxes to the boards. Ours required recessing the screw hole some to allow it to catch in the slot on bottom of box. Overall, very happy with this purchase.