Fabric Composition: Nylon 100%+Polyester+100%. Non-impregnated fabric serves as a natural mosquito repellent and allows good air circulation. SPECIFICATIONS: Head Circumference: 22.8"-23.2"; Crown depth: 4"; Veil: 13.4" long; Brim: 2.95" wide. It fits comfortable over most headwear. Washing Tip: by hand wash below 86 water. DUAL FUNCTIONALITY: The hat features a hidden mesh net compartment on the top that conceals a full head mosquito bug guard. Simply pull it up, adjust it to the size of your head and you're fully prepared to have an enjoying outdoor activity without annoying mosquitoes, flies, insects and bug. Anti-Mosquito Hat or Sun Hat UPF50+ SUN PROTECTION: Featured by a 360° brim, it will provide the optimal protection against harmful UV rays and effectively protects your skin from sunshine.