OOSilk 100% Pure Mulberry Silk Pillowcase 19mm 1pc Hypoallergenic Skin Beauty,Envelope Style, (King, White) 100% Silk Imported Material: 100% 19momme mulberry silk on both sides, Grade 6A quality. This terse style silk pillowcase has an envelope closure which is more beautiful and classic than zipper closure style, and uses much more silk fabrics. OOSILK strictly controls the shrinkage and fastness of the silk fabric, giving OOSILK's silk pillowcases a combination of softness, smoothness, and durability. OOSILKs mulberry silk values the highest quality. High quality mulberry silk is super breathable, and hypoallergenic. It is cool to sleep on and can help prevent bed sweats. It has many amino acids that are believed to slow the aging process and the smooth fire and tight weave allows your skin and hair slide over the pillowcase gently. That's why people use silk pillowcase for anti-aging, anti-wrinkles, anti-hair knotted/loose. Size:20x 36inches (51x91cm), fits king pillows.The envelope closure can hold the pillow very well, prevent the pillow from slipping out. Gift package! Each pillowcase is handmade according to our high standards and wrapped in a beautiful box.