... Tourmaline/Self-heating/Magnetic therapy/Fir heating Magnetic elastic knee support/PadsMain materials: 1 Tourmaline 2 Biological magnet 3 Ceramic powderFeatures ... use. 2, acute injury of soft, please 24 hours after use. 3 the body with heart pacemakers were banned to ... or hot, attribute to normal phenomenon, the phenomenon disappear naturally after takeing off the product. 5, it is strictly prohibited ...