I have two sleeves from the Size Doctor. One has completely torn and the other now has a tear in it. Both sleeves started to rip at the thick end right next to the small circular impression. Whatever that impression is...it needs to go. The thin side holds strong and there are no issues. I’m going to attempt to cut off the bad portion and maybe that will stop it from tearing down the middle like my other one. I just ordered 2 new sleeves and requested a replacement.