Pretty product.   Took two people about 2 hours to put it together.   I have 2 cats, one about 15 lbs and one about 4 lbs., they do fine on it.   We picked this one because we are putting it in front of a window with a heat vent in the floor and needed one with 2 sides so it wouldn't cover the heater.   It's a bit flimsy, but it is o.k. for now.   Kitty loves the little house (which took the longest to assemble), and the highest level.   They've taken the hanging ball down so many times I can't even find it anymore.   The hammock is useless, again it's a bit wobbly.