Japanese Chacoal BINCHOTAN Fiber Materials: 70% cotton, 15% rayon, 10% nylon, 5% polyurethane Kishu Binchotan charcoal fibers gently wrap around your body. The Kishu Binchotan charcoal contained in the fibers emits far infrared rays. The higher the temperature, the more it is emitted, preventing cold all year round, from the summer air conditioner to the winter cold, keeping you warm in winter and dry in summer. Negative ion effect that refreshes the body Ions in the air, which should be balanced, tend to have more positive ions in modern society. Binchotan charcoal emits negative ions, which help return the air to normal and create a relaxing environment. Always clean with deodorizing effect that eliminates unpleasant odors Taking advantage of the excellent adsorption effect of Kishu Binchotan charcoal, it firmly captures unpleasant odors. The effect can be restored by washing with water, so you can wash it with confidence.