Natural elegance at its best. We stitch our Silk Pillowcase from pure 22-Momme Mulberry silk—one of the finest silks in the world. An envelope enclosure keeps your pillow snugly inside. Some recommend the always cool, renewable fabric to help prevent wrinkles and dry skin and hair. The pillowcase includes a GOTS-certified organic cotton wash bag. It is certified safe from harmful substances with OEKO-TEX® STANDARD 100.