Thank you very much for viewing! The product may have been opened for inspection. We appreciate your understanding and cooperation! Material Composition: 100% silk, with a pearl-like luster. Made with 19 momme silk, ideal for nightcaps, resulting in a light and soft finish for beautiful hair and skin. After use, it significantly reduces friction between hair and pillow, gently protecting your hair while you sleep. It prevents split ends and improves hair quality. Silk is light and soft, with moisturizing and antibacterial properties, providing a peaceful sleep. Amazon Brand: We guarantee to provide the highest quality natural silk products. And to provide you with all the guarantees. Cleaning: Hand washable. Use silk-specific detergent or a neutral detergent. Shape and dry in the shade.