Shell: 12 oz./yd², 100% cotton sanded duck; Lining: Heavyweight sherpa; Sherpa-lined front pockets, zip-through collar and extended back trap the heat; Brass front zipper, triple-needle stitched main seams and reinforced bar tacks at all stress points hold up to tough tasks; Three inside chest pockets: right with zipper closure, zippered left chest pocket and two front pockets safely store essentials;