... 3.Tourmaline/Self-heating/Magnetic therapy/Fir heating Magnetic elastic knee support/PadsMain materials: 1 Tourmaline 2 Biological magnet 3 Ceramic ... , activate cells, adjust nerve. Apply for:Bone hyperplasia, knee arthritis, rheumatoid arthritis, joint sprains,contusions,soft tissue damage, ... constitution careful with, may cause use parts skin redness. 4, such as local part appear red or hot, attribute ...