... Tourmaline/Self-heating/Magnetic therapy/Fir heating Magnetic elastic knee support/PadsMain materials: 1 Tourmaline 2 Biological magnet 3 ... powder and special material burns compound and into. It under the excitation of human body temperature (as the role ... , activate cells, adjust nerve. Apply for:Bone hyperplasia, knee arthritis, rheumatoid arthritis, joint sprains,contusions,soft tissue damage, ...