NWT 💯% SILK Pillowcase, Grey/Silver Color King Size. OEKO Certified Material: 100% Organic Pure Mulberry Silk,both sides 19 Momme 600 thread count which is certified to be healthy for you and the environment. No color shading or fading. With a durable hidden zipper closure at the side, the pillow won't slip out. Silk Pillowcase, great for your Hair and Skin. This is 100% Mulberry Silk Pillowcase with Hidden Zipper. Both Sides are 19 Momme and 600 Thread Count . Soft, Smooth 100% Pure Silk. (tested for quality by me 👍) 💌 FREE SHIPPING if you bundle with another item(s).