First of all, milk wool, also called milk fiber, is a new type of animal protein fiber, and its basic raw material is milk. 1. Milk cashmere has excellent safety, natural bacteriostasis, and is mildewproof and moth-proof than wool and cashmere. But also mild and high, durable and washable, and easy to store. 2. It is easy to dry after washing, and keeps its original performance. 3. Milk velvet is soft to the touch and easy to be skin-friendly. 4. Because of its abrasion resistance and pilling resistance, and because milk protein contains amino acids, it will not be repulsive if it comes into direct contact with the skin. Secondly, talk about dove velvet, which belongs to a kind of polyester fiber, and its main component is acrylic fiber. It is a new functional fabric. The fluff on the surface can form an air layer with good warmth retention. Suitable for making commercial products. The most obvious features are breathability, warmth, antistatic and lint-free. Dove velvet is not easy to deform and can be used as thermal underwear. What attracts the attention of the public is its warmth. Keeping warm and not tight is basically suitable for all body types, which is very close to the people. Because it is polyester fiber, wear resistance is also its great feature. Four-piece pajamas with velvet are better.