The strength of cotton duck without the restrictive and rigid finish. Made of durable 12oz. washed "Rugged Duck" fabric. Warm quilted lining for cold days. Action-back pleats and elbow pleats for better range of motion. Plenty of inner and outer pockets for all of your gadgets. Two hand-warmer fleece lined pockets. Inner rib-knit storm cuffs and back drop tail to keep the cold out. Built tough with triple-stitched main seams and most durable YKK main zipper.