Bamboo fiber underwear refers to underwear made of natural bamboo fiber, which belongs to a kind of natural cellulose fiber underwear. It is essentially different from the cheap "bamboo charcoal underwear" and "chemically refined fiber underwear" appearing on the market.
Elastic cotton belongs to the technical field of non-woven fabrics. It is made of hollow curly fiber and low melting point fiber through a certain process to make elastic cotton with three-dimensional fiber distribution. Stretch cotton is to add very thin high-strength rubber bands when spinning. The composition of elastic cotton is generally 98% cotton +2% rubber band, which is mixed and woven.