BIO BAND rings are made only from the finest Medical-Grade silicone (much more costly than simple rubber). BIO BAND silicone rings are the perfect alternative to the traditional metal band. With BIO BAND, you can sit back and let life guide your path. Explore new places, whether it’s going to the gym, going to work, hiking a mountain, or any other high endurance activity, occupation or lifestyle. With BIO BAND, you can just LIVE and ‘Go Where Life Takes You’ without having to stop and remove your metal band. Your BIO BAND ring is simple, masculine, classic. You won’t find a higher quality silicone ring anywhere else. Factory Tested in the USA, Safe Around machinery.