Fabric Tips: 100% Mulberry Silk, free from harmful substances. Design: Extended wide-top design, providing ample space for extra-long or voluminous hair. Fit: Partial elastic band combined with a generous cap body, ensuring comfortable wear without tightness. Fastening:Elastic band at the opening provides secure hold and good encapsulation. Hair Type: Suitable for all hair types, especially long, curly, or thick hair, and for maintaining natural volume. Details: Made from selected mulberry silk, effectively reduces hair friction and maintains hair moisture and shine. The cleverly designed elastic band ensures a secure fit, providing all-night protection.