We select bamboo stalks that are harvested from sustainable forests in Aisa and expose them to intense heat (1400-1800 degrees F) for a period of two weeks. This pyrolysis process creates an unique Bamboo Charcoal known as White Diamond which carries high electrical conductivity properties. With your body heat Bamboo Charcoal powder embedded in these comfortable knitted fabrics emits Far-infrared Rays and Negative Ions.Additional Benefits:Increase Blood FlowMuscle RelaxationEase Joint PainImprove DigestionPromote RelaxationReduce Stress and AnxietyDetoxificationElectromagnetic Radiation Protection