100% PolyesterImportedUniversal Fit & Windproof Secure Design: This unisex sun hat features an elastic rear drawstring and adjustable chin strap for a snug, comfortable fit on head circumferences of 22–24 inches. The secure chin strap keeps the hat firmly in place even in windy conditions, preventing it from blowing off-ideal for both men and women.UPF 50+ Sun Protection & Water-Repellent: Engineered with UPF 50+ professional sun protection, this hat blocks up to 98% of harmful UVA/UVB rays to shield your skin from sunburn. The 3.9-inch wide brim (with EVA foam interlayer for shape retention) provides full coverage for your face and neck, while its water-repellent polyester repels light rain, keeping you dry in changing weather.Breathable & Sweat-Wicking Comfort: Designed with breathable mesh panels for enhanced airflow, this sun cap quickly dissipates heat and moisture to keep you cool on hot summer days. The built-in sweatband efficiently wicks away sweat, preventing drips into your eyes and face for all-day comfort during extended wear.Detachable Multi-Protection System: Equipped with a removable neck flap and breathable mesh face cover, this hat delivers all-around protection against dust, harsh UV rays, and annoying mosquitoes. The detachable design allows you to customize coverage for any outdoor activity, ensuring comfort and defense wherever you go.Durable & Easy Care: Made from premium heavy-duty polyester, this hat is built to withstand frequent outdoor use and resist wear and tear. It's easy to maintain: simply hand wash with mild detergent, avoid bleach, and hang to dry for long-lasting performance. Note: Slight color variations may occur due to different screen settings; a mild adhesive smell on new hats will dissipate after 1–2 days of airing.