Please go on to halcyonbracelets.com . I bought two sets three months ago ,one set for me ,one set for my husband. I have restless legs due to medication and my husband has restless body and was every night pacing the floor. Since the first night of using them neither of us has had anything restless and although we both get up to go to the toilet we can go back to bed and fall asleep again. These bracelets are just wonderful but if you go onto the website you will get all the information you need. I can't believe that I've never had restless legs for three months and my husband is feeling great too with no more disturbed nights.