Not very sturdy.. Needs extra supports since my cat jumping on the hammock and first step bent instantly and have to be re-supported in order to not bend instantly upon use. Cat tree is likely to topple as the ceiling support doesn't support it much and it was missing a bolt upon arrival. we have since attached the supports it needs to be functioning for the cats but i am overall disappointed in the quality for how much i paid for it. I could have gone to Petsmart and gotten a much better quality cat tree for the same price. The cats love it now that it is sturdy. Please improve the quality of your cat trees.