This is one of the best bang for the buck cat condos we have found. We have 3 cats ranging from 2lbs to 18 lbs and they all use this in some way. Understandably for the price, as the cats move up the condo, the stability does decrease and the heaviest of our cats does not always feel stable enough to make it to the top but our kitten will venture all the way to the top and loves it!