12 oz 100% cotton Tough Duck material lined with 6 oz polyester insulation . Seam sealed waterproof seat . Waterproof double knees .Heavy - duty 2 way leg zippers from ankle to hip . Elasticized adjustable shoulder straps . Chest pocket with pencil slot . Loss proof chest pocket for cell phone . Elasticized back waist . Turned under hem allows for 3" tall extension . Available in brown or black .