IF Silk, Pure Silk Pillowcase 100 Silk Luxury Quality Pillowcase 22mm Ivory Envelope closure Fine Fabric: 100% Premium Quality Chareuse Mulberry silk of 22mm thickness, Very Smooth, Soft and Comfortable with Great Silky Skin Feeling. 22mm is more tight and thicker than 19mm with extra durability. Envelope design: Our No-Zipper design allows this pillowcase to be used durable and convenient, side-entry envelope design allowes you to sleep on either side. A Laundry bag included for your convenience. Beauty Secret: Silk is a Natural Hypoallergenic fabric; Dermatologist recommends for skin Care and hair Care. 3 Sizes: Standard is 20 X 26 inches, Queen is 20 X 30 inches; King is 20 X 36 inches; One pillowcase per package. Perfect GIFT for Your loved: from love, to love, with love, for love, and in love; Affordable luxury