The gram weight height of the four-piece milk cashmere set refers to the thickness of the four-piece milk cashmere set. Milk velvet is fluffy and delicate, with cashmere-like feel, better wear resistance and pilling resistance, thicker than coral velvet fabric, and it is a popular bedding material at present. Milk velvet is a blend of milk protein fiber and polyacrylonitrile (commonly known as acrylic fiber), which has strong hydrophilicity and good thermal conductivity, that is to say, it is warm and breathable when covered on the body.