About this item Material: 100% natural silk 6A both sides 19 momme. smooth and soft. Silk fabric has 18 types of amino acids that effectively stimulate the metabolism of your skin cells, to help your skin retain moisture. The more hydrated your skin is, the less visible fine lines and wrinkles become. Dimensions: standard size: 50 x 66 cm; double bed: 50 x 76 cm; king size bed: 50 x 91 cm. Hidden Zipper: Hidden zipper, comfortable and better fit, which can hold your pillow perfectly without moving. The large opening and long zipper make it easy to place pillows. Anti-aging: BEIJOEY silk pillowcase is the most natural anti-aging product. Silk’s natural fiber and tight weave allows skin and hair to slide over the pillowcase very smoothly and freely, it creates less friction between your hair and skin and the silk pillowcase, helps reduce facial wrinkles, prevent dry/knotted hair and reduce hair loss. Improves the quality of your sleep. Temperature Regulator: Pure silk is a natural temperature regulator to help you feel cool in summer and warm in winter. Silk is a symbol of elegance and nobleness. The perfect gift for Birthday, Mother’s Day, Father’s Day, Valentine’s Day, Christmas.