Name: Silk Zipper Pillowcase, Material: 100% Mulberry Silk Size: Standard:20*26inch(51*66cm) Queen:20*30inch(51*76cm) King:20*36inch(51*91cm) SKIN AND HAIR BEAUTIFUL MYSTERY: pillowcase is the natural temperature regulator and the lowest friction of your beautiful hair and skin. Soft and silky pillowcase prevents hair from becoming knotted and tangle, reduce hair loss. Sleep on slip pillowcase also helps to reduce facial wrinkles and dryness, perfect for anti-aging, relaxed sleep and comfortable daily. Silk Care Instruction: Hand wash, or machine wash cold in delicate cycle, separately from other items. Hang dry, or cold air machine dry. Please do not expose silk under the strong sun. Customer satisfaction is our guarantee. If you are displeased with your silk pillowcase in any way, only send us one email and we will provide a full refund. We hope you enjoy this silk pillowcase.