Rings by Rinfit. Details:Rinfit's silicone rings are specially engineered to comfortably fit each and every one's unique lifestyle, whether you have an active lifestyle or your daily job requires you to work with your hands this is the right ring for you! Rinfit's silicone rings ...Rings by Rinfit. Details:Rinfit's silicone rings are specially engineered to comfortably fit each and every one's unique lifestyle, whether you have an active lifestyle or your daily job requires you to work with your hands this is the right ring for you! Rinfit's silicone rings are specially engineered to comfortably fit each and every one's unique lifestyle, whether you have an active lifestyle or your day job requires you to work with your hands this is the right ring for you!