The main materials used for pillowcases are cotton, polyester and rayon. the most comfortable material is pure cotton fabric, good air permeability and moisture absorption, and does not irritate the skin. Silk pillowcase, also known as silk pillowcase, silk fiber queen, soft gold and may other reputation. More than 97 percent of its tissue is animal protein, rich in 18 essential amino acids, which are said to clean and maintain the skin and increase the vitality of skin cells. ● Cover fabric is polyester cotton, cotton, polyester ● Filling is 100% polyester hollow fiber 65-120g/m2 ● Your can chose with zipper and without zipper.