Amazon.com: Summer Mesh Sun-Hats for Women UV-Protection 。*Color: Black *Fabric type: Cotton and polyester *Care instructions: Hand Wash Only *Sun hat Material: This fashion fishing sun hat is made of cotton and polyester, it is light and breathable, the fabric is not easy to fade, scratch, shrink, and the upper part of the hat is designed with mesh to keep your head breathable and cool all day long. The 4\" wide brim provides enough shade for your face and neck, and the UPF50+ UV sun protection hat will block 91% of harmful sunlight. *Size Adjustable: This wide brim beach hat measures 56-58cm / 22.04 ~ 22.83\", you can tie a small ribbon with built-in sweatband for the best fit, the hat height is about 8cm / 3.14\", and the brim is about 12cm /4.72, the removable and adjustable chin strap allows the hat to stay put on windy days, and the casual sun hat provides up to 361 degrees of protection for the face, ears and neck. *Shapeable Wired-Brim: This casual sun hat has high-quality steel wire built into the brim, making the wide-brimmed hat stiff enough to flip up or down to adjust look or coverage, and the brim is large enough to cover your face, ears, neck, and part of your shoulders Provides sunscreen UV UPF protection.