The box the Cat tree was shipped in was heavier duty then the contents. The covering is a fake fur, similar to that of a stuffed toy, not carpet. The "sisal" scratching area is a synthetic material. The base Is light weight, the top platform located at a corner partially over the tree with a portion jutting out results in instability - it tips if not secured to something or wedged against something for support. The Cats are less then interested in it, have detached the mouse toy and they are enjoying that!  The design and measurements looked good on the Wayfair site - the product received... not so much :-(
Should have kept the shipping box.