OOSilk 100% Mulberry Silk Pillowcase for Hair & Skin Standard Size, Champagne 100% Silk Imported 100% grade a long standard mulberry silk on both sides, 16momme, 400 threat count Mulberry silk values the highest quality among all kinds of silk It's the most natural anti-aging product, as well as hypoallergenic, smooth, soft, breathable and comfortable It's absolutely healthy, chemical-free, naturally dyed, no color shading or fading Hidden zipper closure at the side prevents slipping