The Bamboo Charcoal in this product reacts with your body heat to naturally emit Far Infrared Rays & Negative Ions. We create it by selecting bamboo stalks harvestedf from sustainable forests in China & expost them to intense heat over 1800F for two weeks. Additional Benefits:- Increase Blood Flow- Muscle Relaxation- Ease Joint Pain- Improve Flexibility- Improve Digestion- Promote Relaxation- Reduce Stress & Anxiety- Detoxification- Electromagnetic Radiation Protection The Pyrolysis process creates a unique Bamboo Charcoal known as ' White Diamond', which carries high electrical conductivity properties. It is ground into powder form, encapsulated in an insert & placed ina 100% cotton cover. When used with proper physical therapy, this product may improve your blood flow to ease minor & temporary health issues. It activates with your body heat & can be re-charged in the sun.