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. When used with proper physical therapy, this product may improve your blood circulation, which can ease minor and temporary issues such as: Joint Dicomfort Stiffness Muscle Tension Body Aches Soreness Improve Stamina Promote Relaxation Increase Comfort Remove Odour and Dampness Please note actual image may vary.