I've been using the braces for over a month now. I started with my right knee, and it worked good (apparently my knees are extra large and my elbows like the longer fit onto upper shins). I felt a noticeable difference right away, that at the end of the day, the ache is gone. I do construction, so there is a lot of bending and climbing. There isn't the pinching and binding I got from the Neoprene braces that hurt almost as much as the joint aches.
I picked up one for my wrist yesterday, and am just as pleased (except it really needs an extended thumb part). I just go and buy them at the store, they are reasonably priced, and with knowing that they fit there is no hassle. The total I spent on other braces in last few years is $100 easily, and with Copper Fit, it's $35. I am done with the others. Actually, have two guys at work that picked up knee braces and some elbows too from my recommendations, and they are very pleased also.
Bottom Line: Yes, I would recommend this to a friend