This item is a pair of self-heating pad designed for your elbow, which is made up of permanent magnets, nano-functional ceramic powder and a special heat sensitive materials. It can effectively improve blood circulation, promote metabolism, and clear the meridians, immunity.Features- Color: mainly black.- Material: Tourmaline, nylon, spandex.- Size: * 16cm.- Made up of permanent magnets, the bio-composite heat-chip.- Nano-functional ceramic powder and a special heat sensitive materials.- With dual thermoelectric and piezoelectric effect.- Forms a resonant magnetic field resonates with the human body.- Can effectively improve blood circulation, promote metabolism, and clear the meridians, immunity.- Applicable to bone hyperplasia, elbow pain, joint pain and other symptoms of hyperthermia therapy.- With elastic Hook & Loop belt, safe comfortable to wear.- Note: If the body part appears redness, fever, hyperthermia, it is a normal phenomenon.