Doublelayer design: The night sleep cap uses an innovative doublelayer fabric that helps lock in hair and prevents stains on sheets after hair mask use. The satin bonnet features a silky soft grip on both sides for maximum comfort, keeping hair frizz and well protected. materials: 100% mulberry silk, 26 momme on both sides. The cap is made with 6A quality 100% mulberry silk, providing a smooth, soft, lightweight, and breathable feel that is ideal for hair and skin. Size options: Available in two sizes for a better fit (26 cm and 23 cm). Choose the size that suits you . Adjustable fit: Concealed, adjustable, flexible design to fit all head sizes. Provides a snug and secure fit for comfortable wear and helps prevent water leakage during shower use. Hair protection: Wearing the satin cap while sleeping protects hair from split ends and dryness caused by friction with moistureabsorbing pillow materials such as cotton. This cap is especially suitable for curly or wavy hair. Use scenarios: Night time: Wear while sleeping to protect and preserve hair, especially after hair masking treatments, and to reduce frizz. Shower / bath: Use as a shower cap to keep hair dry and away from moisture while washing. Travel or daily wear: Ideal for keeping hair organized and minimizing tangles and frizz during travel or on busy days.