Shell: 12 oz., 100% cotton sanded duck ; Body Lining: Arctic-weight polyester stretch sherpa; Sleeve Lining: Medium-weight insulation quilted to taffeta; Flex180® provides flexible, vented underarm gussets, flexible elbow inserts and an extreme-stretch action back for optimal mobility; Heavy-duty brass front zipper keeps up with the day's demands; Three-piece lined hood with drawstring and hidden knit storm cuffs block the cold; Three inside pockets, zippered right chest pocket and two front pockets provide convenient storage