High Quality Material: The silk beanie is made of premium imitation silk fabric, which is soft, breathable, washable and skin-friendly. With the fixed color technique, this silk nightcap will not be a problem of fading while you sleep at night. The wider elasticity of this sleeping cap has been tested thousands of times and can be worn on your head all night without marks in the morning. Just enjoy your sleep. Protect Your Hair: This silk sleep cap can minimize the friction between hair and some moisture-absorbing materials like cotton in your pillow to protect your hair from dryness, breakage and unnecessary knots in the morning. The silky cap prevents hair from tangling and can lock in hair moisture to protect your hair from split ends. One size fits most: the outer diameter of the cap is 34cm and the length of the elastic band is between 50 and 99.6 cm. The deep inner lining of the silk cap is ideal for holding natural hair, curly hair, braids, weaves, rollers, hair clips and long hair. The elastic band can be stretched to fit different head sizes to keep the cap on your head all night long. Dual-layer fabric design: The double-layer fabric design of the nightcap is super soft and silky on both sides and can also wrap hair well. After using the hair mask, the silk cap will not stain the sheets while sleeping. The double layer protection can also keep your pillow, bed and face clean and clean. 2-in-1 reversible design, you simply choose your favorite side by flipping it