Work proven, Carhartt's duck active jac is built with 12-ounce, firm-hand, 100% ring-spun cotton duck with a 100% polyester thermal lining for on-the-job warmth. This jacket includes a thermal-lined hood, and its rib-knit cuffs and waist work to keep out the cold. The jacket also includes two large hand-warmer pockets and two convenient inside pockets. For added strength, main seams are triple-stitched.