Carhartt Men's Force Mandan Plaid Short Sleeve Shirt 72% Cotton/28% Nylon Imported Machine Wash 3.25-ounce 72 percent cotton, 28 percent nylon Fast dry technology wicks away sweat for comfort Stain breaker technology releases stains Double-layer collar converts to stand-up collar for sun protection Mesh-lined vent at center back facilitates flow-through ventilation