I have been looking for a knee brace quite some time. I either find one that rolls that has the non-slip silicone beading on it or a comfortable one with no non-slip silicone beading. This knee brace comfortable it gives me plenty of support, but it does not have the nonsense silicone beating to keep it up on my leg. It was continuously slipping down my leg. I got what I need according to the size chart, but it still kept on slipping. So I'm going to have to modify it when I get the elastic with the non-slip silicone beating on it.
L