Features of the 5.11 Men's Marksman Short Sleeve Shirt 50+ UPF rating Short sleeve shirt styling with two piece collar Center front button placket Double layer yoke Chest pockets with button flap closure and pen guides Underarm mesh gussets Shirt tail hem (+) High Density heat transfer at Upper back body 5.11 (+) Woven label at left chest pocket Fabric Details 100% Polyester