This sweat-busting, stain-fighting shirt will also keep you cool as a cucumber. 3-ounce, 60/40 poly/cotton sheeting FastDry technology wicks away sweat Stain Breaker technology releases stains Double-layer collar converts to stand-up collar for extra sun protection Mesh-lined vent at center back for flow-through ventilation Four chest pockets: Left has buttoned-flap pocket with an oversized, concealed, zippered, mesh-lined vertical pocket Right has two easy-entry pockets: one with button closure, one with hook and loop closure Contrast color neck piping Carhartt label sewn on left chest pocket Carhartt Force labeling on inner back neck Relaxed fit