Outwork everything under the sun. Engineered with an emphasis on sweat-fighting and sun protection, this work shirt is ideal for the warmest days.. 2.9-ounce, 71/29 polyester/nylon chambray. Sun Defender UPF 50+ UV protection. Carhartt Force works harder to fight sweat, dry fast and stop odor. FastDry technology wicks away sweat to keep you cool. Rugged Flex technology for ease of movement. Button-down collar. Mesh-lined vent at center back for flow-through ventilation. Two chest pockets with a pen stall. Carhartt label sewn on left chest pocket. Roll sleeves with button tabs. Two-button adjustable cuffs with extended plackets. Relaxed fit