other than the harsh smell when taking it out of the box that goes away fairly quickly it was easy to assemble(kind of) none of the parts are marked but if you sort them all out by size it easy to figure out which piece is which, it supports both of my cats and one is rather fat, comes with extra bolts, very soft, I would love it if I was a cat, seemed really wobbly while assembling but when i got the parts on that attached the sides to the middle it stopped would definitely recommend and buy again