Outer fabric: High-density domestically dyed cotton material Lining: Imabari-made double gauze Size: Adult Retail price: 1628 yen (tax included) / 1 bag Beige x 2, White x 1, 3 sets total (2 pieces each) for a total of 6 pieces The gauze material on the side that touches the skin feels smooth and is less likely to get stuffy compared to non-woven fabric masks. The effects of silver ions adsorb and suppress allergens such as pollen and dust mites, as well as viruses and bacteria. 100% cotton mask, washable and reusable.