Far Infrared Heating Pad Wrap with Far JadeMULTI FUNCTION This long heating tape can be used on all parts of the body, neck, wrists, knees, ankles, upper arms, calves NATURAL JADE STONES Unlike traditional heating pad, we use 8 natural jade stones, it will penetrate more and keep warm HIGH TEMPERATURE 103 159Compared with other ordinary products, this product is higher temperature and more flexible SAFETY DESIGN The most important thing about the product is safety and quality, DC products,110V