YANIBEST Pillow Cases 2 Pack 100% Mulberry Silk Pillowcase for Hair and Skin with Hidden Zipper Wheather you buy our silk pillowcase or not, nice to meet you here. Notice satin is not the real silk, only real silk good fur hair and skin QUALITY GUARANTEE - 100% 19 Momme Grade-A top quality mulberry silk, good for hair and skin FUNCTION - It's the most natural anti-aging product, as well as hypoallergenic, smooth, soft, breathable, and comfortable. High-quality silk can help prevent hair from becoming knotted and matted, and it can reduce facial wrinkles SIZE - 20 x 30 inches (51 cm x 76 cm), Hidden zipper closure at the side to prevent slipping Notice: Satin is not silk. Satin price is low, which is smooth as silk, but can't work as natural silk