Purchase Price: 850 yuan (currently 18,873 yen) This is a product where minerals beneficial for the body are finely ground to nano/microscopic units and then sprayed onto the fibers. You can think of it as having the functions commonly advertised, such as promoting blood circulation, relieving muscle stiffness, recovering from fatigue, and improving sleep quality. I had the fibers of the same product burned in front of me, and only the minerals remained without burning completely. I purchased it after confirming it was from a reputable company, so it's fine (otherwise, I wouldn't buy something this expensive, lol). My mother bought it for me, but I didn't use it much, so I'm selling it at a super low price. It's no longer available now. The size is, I'm a woman, but it's big enough to wrap around about half of my buttocks. Feel free to ask if you have any questions! Warm, belly band, used, shipping included, beautiful condition, mineral