A co-worker gave me a knee brace after complaining about my knee hurting at work. It seemed to help within the first hour of wearing it (despite that it was a medium and I had to stretch it out on a coffee can for three days before I could fit it up my leg without feeling like my circulation was being cut off). So I wore it for the next three days only at work. After I took it off, the third day I noticed a red ring around my leg, I assumed was from being tight. The next day the ring began to itch, so I did not wear it again. Three days after taking it off, the ring is still there and itches like no other. It burns and stings so bad. After reading another review, I believe it may be an allergy to the silicone. I don't know if I will be wearing it again even though it seemed to be helping my knee pain.
Bottom Line: No, I would not recommend this to a friend