Home Prefer Mens UPF 50+ Sun Protection Cap Wide Brim Fishing Hat with Neck Flap polyester Imported Premium 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.