Short length, low strength, thin and thin scales on the fiber surface, close to each other. Because the crimp number of the fiber is less than that of wool, and the friction coefficient is smaller than that of wool, the fiber is smoother, the cohesion between the fibers is poor, and the cashmere is worse than that of wool, but the feel is smooth and waxy. Cashmere fiber has little curl, but its curl depth is large. Generally, the straightness of cashmere is more than 300%, while that of 64 merino wool is only 160%. Therefore, cashmere products have better thermal insulation than wool. Under the same temperature and humidity conditions, cashmere is easier to absorb moisture than wool.