Our pillowcase is made of polyester, which combines the permeability and sweat absorption of polyester, making it strong and durable. Exquisite edging technology, excellent inside and outside, not easy to open line, not easy to deform and not pilling. Export quality, invisible high-quality zipper. Make your pillowcase look perfect. Unique ventilation, cool summer feeling, no sweat worry. It;s also a great choice for winter, extremely warm. Thermal conductivity and moisture absorption are greater than cotton fabrics, and you will get excellent night sleep. Quantity: Set of 2