【100% Natural Silk Pillow Case】Pillowcase produced from domesticated silkworms that are bred and raised in captivity which is a skin-friendly choice. Both side 6A Grade 22 momme 600 thread count pillowcase. Real silk makes you feel silky & smooth. 【Silk Pillow Cover for Your Skin and Hair】Real silk contains 80% of nature protein and 18 kinds of amino acid, effective at maintaining your skin moisture all night. Compared to other fabric pillowcase, this silk pillow cover can reduce friction by 44% to improve your skin and hair. 【Temperature Regulating】Pure silk has an premium moisture wicking function, which helps you maintain the body temperature at a more constant temperature all night. It keeps you cool in summer and warm in winter. 【Envelope Closure Design】Vividmoo silk pillow sham comes with a deep envelope pocket to secure your pillow inside the case. No zipper! No Plastic! Just premium silk all around! 【Multi Sizes & Durable Colors】Size comes to Standard 20" x 26", Queen 20" x 30" and King 20" x 36". Wide the most popular color you can choose from Ivory White, Pink, Silver Grey, Black. Support Machine or hand wash. Feature:100% grade 6A natural silk pillowcaseSoft & smooth & BreathablePackage Included:1 * Mulberry silk pillowcase