First of all, milk wool, also known as milk fiber, is a new type of animal protein fiber, and its basic raw material is milk. 1. Milk cashmere has excellent safety and natural bacteriostasis, and is more mildew-proof and moth-proof than wool and cashmere. But also mild and efficient, durable and washable, and easy to store. 2. It is easy to dry after washing and maintains its original performance. 3. Milk velvet feels soft 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 rejected if it comes into direct contact with the skin. Secondly, dove velvet is a kind of polyester fiber, and its main component is acrylic fiber. This 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 easily deformed and can be used as thermal underwear. What attracts the attention of the public is its warmth. Keep warm and not tight, basically suitable for all kinds of bodies, very close to the people. Because it is polyester fiber, wear resistance is also a major feature. Velvet four-piece pajamas are better.