Sandstone Duck Detroit Jacket by Carhartt. Sturdily built of 12-ounce, 100% cotton sandstone duck, it features blanket lining in the body and quilted-nylon lining in the sleeves. There�s an inside welt pocket, two lower-front pockets, and a left-chest pocket with zipper. The waist and cuffs are snap adjustable. The jacket also features triple-stitched main seams and a bi-swing back for easier movement.