Cashmere has irregular thin and deep curl, which is composed of scale layer and cortical layer, without medullary layer. The density of scale is about 60-70 / mm. The cross-section of the fiber is nearly circular, and its diameter is thinner than that of fine wool. The average fineness is 14-16um, the fineness unevenness is about 20%, and the length is generally 35-45mm. The tensile length and hygroscopicity of cashmere are better than those of sheep hair. It is fine, light and soft It is soft, smooth and warm. The fiber has moderate strength, elasticity and a natural soft color. Cashmere is more sensitive to acid, alkali and heat than fine wool. Even under the conditions of lower temperature and lower concentration of acid and alkali liquor, the damage of cashmere fiber is also significant, especially to chlorine containing oxidants.

Warm and soft. Cashmere is one of the finest animal fibers. The fineness of Albas cashmere is generally between 13um and 15.5um, with high natural curl. It is closely arranged in spinning and weaving, and has good cohesion. Therefore, it has good thermal insulation, which is 1.5-2 times of wool. Cashmere fiber has small and smooth scales on the surface, and there is an air layer in the middle of the fiber, so it is light in weight and smooth in hand.

Second, the color is natural and soft. Cashmere is regular, fine, light, and easy to absorb. Compared with other fibers, cashmere has the advantages of natural luster, softness, purity and brilliance.

Third, it is flexible and elastic. Due to its large crimp number, crimp rate and crimp recovery rate, cashmere fiber is suitable for processing into knitwear with fullness, softness and good elasticity. It is comfortable and natural to wear, and has good reduction characteristics, especially it does not shrink after washing and has good shape retention.

As a kind of cashmere, double-sided cationic cashmere has the same characteristics as cashmere.