4 ½ oz. Twill. Two pockets w/flaps. Under arm gussets. Pleated action back w/one pt. curve back yoke. Adjustable cuffs. 100% Cotton. Gusset inserts at underarm. Side action back pleats W/box tacks sewn at top and bottom of pleats. Since the 1930's, Walls is known for quality. Today, Walls is a market-leading designer, manufacturer and marketer of branded workwear, hunting and outdoor apparel.