It says its by Tucker and Murphy which I had not heard of but the box said it is by Yaheetech which I have heard of and would not have purchased if I knew this. It does not seem sturdy. I have four cats and my 7lb adult didnt like it at all due to how wobbly it is. I have 2 cats that are smaller than her and the fourth is around her same size. I think the smaller two may use it but, wondering how long before something breaks. The larger box does not sit level on mine which makes me think it might be the first thing to break. The top perches are smaller than most towers of this size.  It was easy to assemble. Ive never had a cat tower come with I tip strap but, judging by how wobbly this is I see why this one did. Not real happy but, not worth the Hassel of returning it either.