Basically, this product is good but it's not top shelf. However, for the price and my situation, it works well. For starters, my right knee suffers from soft tissue damage and really can't be fixed, but I can still walk and run, but on the occasion I get bad pain and it hurts to walk. I've used other braces that honestly work better and give better support but try wearing slacks with those. It doesn't work. My Copper Fit knee brace does mildly relieve pain during work hours, and I can wear slacks comfortably. That's the big thing for me.
Also, I know it works because it reduces the time for my knee to "heal" or just return to normal from the normal week or more, Oh yeah, if you're active and other braces are too bulky, this is the way to go, otherwise spend a bit more and get a nice one. Also, as others have said, don't buy online. Instead purchase the Copper Fit from places like Walmart, Walgreens, etc. Honestly, I got mine at Ross for $7.99 and for that price it's great.
Bottom Line: Yes, I would recommend this to a friend