13-ounce 100% cotton, FR duck ¿¿ 6-ounce, twill-face cloth lining ¿¿ Two inside patch pockets with FR hook-and-loop closures ¿¿ Nomex¿¿ rib-knit cuffs and waistband ¿¿ Brass front zipper with Nomex¿¿ zipper tape plus inside and outside protective fl aps plus hook-and-loop closure for electric-arc protection ¿¿ Under-collar snaps for optional FR hood ¿¿ Back length: Large Regular: 29 inches; Large Tall: 31 inches ¿¿ Carhartt FR label sewn on front pocket, HRC 2 label sewn on zipper fl ap ¿¿ NFPA 70E compliant ¿¿ Flame-resistant fabric by Mount Vernon Mills