Polyester,breathable,quick-drying,lightweight and comfortable wear Featured wide brim and mesh vents for cooling airflow through the crown and back flap Adjustable or removable chin strap provides versatility UPF 50+ for ultimate sun protection, blocks 98%+ of damaging UVA/UVB sun rays Perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, cycling, boating etc Home Prefer unisex wide brim sun protection hat with mesh vents for cooling airflow through the crown and back flap. Adjustable or removable chin strap provides versatility. UPF 50+ for ultimate sun protection, blocks 98%+ of damaging UVA/UVB sun rays.Unisex design, fit to head girth 22-23.5" / 56-59.5cm Perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, cycling, boating etc.