I love the design on this.  I gave it a four star simply because it's  more for kittens & I have monster boys who are about 18 lbs.  I knew it was small but I was throwing away their old worn out tree and the fact that it was supposed to be very sturdy sold it. It is very sturdy on the bottom. Even my boys don't tip it over!  The top roll cubby is a little wobbly but would be perfect for kittens!