This cat tree is made of high quality materials and is an attractive design.  Unfortunately the upper two perches are supported by only one center pole (unlike my old cat tree which had two poles supporting each perch), and that makes it a bit too wobbly for my cat's comfort.   The company does recommend bolting the middle perch to the second pole, but I don't have a drill or the skills.  So they are aware of the problem.  Another issue for smaller cats is that the perches are deep, making it harder for my cat to climb easily into them.  So he's not using the new perch as much as he did the old.  So not the success I was hoping for.