Love this cat tree.  Relatively easy to put together.  I am 72 YO female and managed it all by myself.  Only caution was I put the posts of one of the bottom parts on the wrong side so when it has you attach the sling at the very end is when I realized one side was connected wrong.  Otherwise, instructions were very clear and easy to follow. The tree seems very sturdy and I like the various layers. Good value for money.