New side entry chest pockets. Double knees. Nylon scuff guards. 10 oz. high-performance duck - up to 20% stronger. Water-repellent finish, retreat after washing. Zip close pockets and left back pocket. Heavy duty brass 2-way front zipper. 100% cotton, lining: 100% nylon with 6 oz. polyester fill. Medium 30/32, large 34/36, extra large 38/40, extra extra large 42/44. Short 28, regular 30, tall 32.