Our extreme performance cap Lightweight UV 50+ UPF Cool Crown Mesh Lined Sunshield Long Bill Cap provides excellent UV sun protection. This cool mesh lined ball cap is great for all summer outdoor activities. Made from 70% Cotton and 30% Nylon. Long bill. Mesh on the side panels. Unstructured, low profile cap. Mesh lined crown. Fitted with a terrycloth sweatband. Adjustable hook and loop closure. One size.