"Product Measurements: Size Width Height Max Stretched One Size 26cm / 10.2"" 22cm / 8.7"" 48cm / 18.9"" This data was obtained from manually measuring the product, it may be off by 1-2 CM.Fabric Tips: 100% Mulberry Silk, free from harmful substances. Design: Stylish in design, with a spacious cap that can accommodate a large amount of hair. Fit: Wide elastic headband with long ties for a comfortable, non-tight fit that contours to your head. Fastening: Adjustable long ties that can be secured at the back, allowing for a custom fit for any head size and hair volume. Hair Type: Suitable for all hair types, especially long, curly, or thick hair, and for maintaining natural volume. Details: Expertly crafted from pure mulberry silk, its smooth texture helps reduce hair friction during sleep. The adjustable long ties ensure the cap stays comfortably and securely in place all night, protecting your hairstyle and preventing frizz and tangles. Please note: The bowknot tie is not pure silk."