Sticks on more than most that I've gotten but doesn't feel very sturdy. Every once in a while I have to re apply it to my window because it starts to come off. The scratching post isn't that well made and the rope started to come off very quickly after we got it, even with very minimal use from my cat. But other than those issues I think this is pretty good. Cat seems to like sitting on it but is a little careful because it sometimes gets loose and has fallen once with my cat on it.