100%silkMade of 100% high quality imported luxury 6A grade 22 Momme mulberry silk. These luxury grade silk pillowcase are very smooth, soft and drapes nicely.Silk’s natural protein fibers protect the skin and hair preventing wrinkles and split ends, dermatologists recommend silk pillowcases for hair and facial; prevent hair from becoming knotted and matted and keeping beautifully styled throughout the night.Hidden zipper for style comfort and better fit, prevents slipping out and ensures that the pillow stays perfectly in the pillowcase and easy to put pillow in and out.20 x 30 inches (51 cm x 76cm) fits most queen size pillows. We possess the OEKO-TEX Certificate to guarantee no harm substance.Available in many vibrant and beautiful colors. No color shading or fading. It is a great gift for anyone who enjoys deep, restorative sleep.Hand or machine wash in cold water on gentle cycle. Hang to dry. Iron at low settings recommended. Do not bleach.