Our new kitten loves this, she has explored it from bottom to top and especially loved the mice, but the mice are why I gave it only 4 stars, the material that they are made of come off into the kittens mouth and she eats it. I cut the mice off because of the long fuzzy fabric. Other than the mice, I give it a 5, it's sturdy and went together fairly easy.It was delivered late, but Fedex was the cause of that and that is a whole other story.