Durable Poly/Cotton. Bi-swing back and elastic at waist for ease of movement. Dickies ScuffGard. Double knees. Zip-to-waist for easy On/Off. Side entry chest pockets & one inside pocket. Double knees. Nylon ScuffGard. Knit storm cuffs & corduroy collar. Zip-close chest pockets & left back pocket. Heavy duty brass 2-way front zipper w/large pulls. 7.5 oz Twill, 65% Polyester/35%Cotton. Lining: 100% Nylon w/6 oz. Polyester Fill.