[ Real Mulberry Silk] - Both sides of silk pillow case and silk sleep mask are made of organic mulberry silk. Its a soft, breathable, hypoallergenic and organic fiber.[Anti Aging Anti Sleep Crease]- Silk pillowcase, the natural anti-aging product, soft and breathable, prevent irritation to your delicate skin. It could reduce stretching and tugging on hair delicate facial skin, prevent hair from tangling split ends, keep your skins moisture and reduce facial wrinkles.[Durable Long-Lasting]- Using the real silk fabric with exquisite workmanship, Twin Hem Stitching, 600 Thread Count, Hidden Zipper design, which makes the silk pillowcases more steady and firm. Superior durable plain color - non toxic dyes, not easy to fade after washing.Colour:Navy blueMaterial:SilkSize:51x75cmPackage Contents:1 x pillowcaseOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store