About this item?NATURAL FABRIC:ZIMASILK silk pillowcases are made of 100% pure mulberry silk, both sides 22 monme and 600 thread count with hidden zipper design.OEKO Certified ensure the quality.?FUNCTIONAL SILK MATERIAL:The touch feel of this material is more soft, breathable, and comfort than average silk fabric.Meanwhile,it has a better moisture wicking feature.?BEST FOR HAIR&SKIN:The silk pillowcases prevent hair from becoming knotted and matted,have good sleeping,reduce facial wrinkles.It is a anti-aging product.?MULTI SIZE&COLOR: KING 20×36 Inches(50cmx90cm) fits most KING size pillows.Durable color dying not easy to run after washing.?GIFT WRAPPING: Each pillowcase comes wrapped in an elegant gift box.Best gift choice for your lovers and friends on Thanksgiving,Christmas,New Year festivals. Any of your issues would be solved with 24 hours.