I was recomended TrionZ from a friend so bought the Trion Z Ultra loop for my partner who has been suffering really badly with arthritis in the hands, not sure if it would make any differnce but thought it was worth a go, its only been a few days but so far the results are good, the pain is a lot better. I am now going to get one for myself as i get r.s.i in my wrist and elbow. Then we may splash out on two Colantotte bracelets, pricey, but they look really good.