Foldable Boonie Fishing UV Sun Hat w/Vented Mesh, Hiking & Outdoor Cap, SPF 50+ 75% Nylon, 25% Polyester Men's Performance Sun Hat with UPF 50+ sun protection for Hiking, Gardening, Fishing, Travel Created from Supplex nylon, hat features UPF 50+ sun protection from both UVA and UVB rays Coolmax lining and crown with mesh sidewalls - work together to keep you cooler on hot days Features attached chin cord and hidden drawstring with toggle adjuster for the perfect snug fit 2.75 inch brim surrounds hat to shield your head, face, ears and nose from the sun's hot rays