Save a little more buying this combo. This package contains a bag and a sleeve for external treatment of Elbows, Shoulders, Knees, Hands and Feet with H2/HHO gas . Breathing and drinking H2 water are very beneficial but for more serious problems with extremities and joints we have found it extremely more effective to treat externally with the HHO gas since it easily diffuses into your skin. This method greatly increases blood circulation while decreasing any inflammation for faster healing. We have found a noticeable difference using these bags and sleeves as compared to only breathing or drinking H2 water. For more details on each individual product look for these items in our store.