SilkSlip Luxury 100% Mulberry Silk Pillowcase 25 Momme for Hair with Hidden Zipper,Queen(20x30 Inch),Violet,1pc 100% Silk Material: 100% 19momme mulberry silk on both sides, soft and smooth. Closure: Hidden zipper design makes the pillowcase hold the pillow perfectly. Big opening and longer zipper allow you fit the pillow into the pillowcase easily. Benefits:The soft and smooth fiber allows the skin and hair to slide over the pillowcase very gently and freely, reducing facial wrinkles and preventing knotted hair. Size: Queen 20" x 30" (50 x 75cm) Easy Care: Hand or machine wash in cold water on gentle cycle, do not bleach, hang dry