Most fibers, in the dry state, are able to expel the body's moisture from the skin to the surface of the fabric. But the biggest problem is "sweat." Compared with man-made fibers, natural fibers have better hygroscopicity, but the feeling of wet and cold adhesion is very uncomfortable. Because of the "stucktogether" caused by moisture and sweat, it cannot be removed through fibers. Therefore, the fabric of comfort must meet the following requirements: like the skin, it can adjust the temperature and humidity to maintain a comfortable feeling. Good hygroscopicity and moisture permeability. No odor, no irritating to the skin. It has good extensibility and does not affect the stretching of the body. Light weight. Durable waterproof and anti-fouling function.