Shell: 12 oz. 100% cotton sanded duck; Lining: Heavyweight insulated quilted to 100% polyester taffeta; Insulated high back and outside storm flap; Triple-needle stitched main seams, reinforced knees and heavy-duty nylon leg hem; Two inside chest pockets, two chest pockets with pencil slot and hidden zipper pocket; Two deep front pockets, side utility pockets, hammer loop and two reinforced back pockets; Left with brass zipper for maximum storage