Our flame-resistant relaxed-fit utility jean resists flames, not hard work. Constructed of rugged 14.5-ounce, 100% cotton FR denim, it features an arc-resistant button at the waist as well as a brass zipper with NomexÂ® FR zipper tape. Built tough, it includes two reinforced back pockets and Carhartt strong triple-stitched main seams. Comfortable, too, the jean comes garment washed for a soft finish, sits slightly below the waist, and features a relaxed-fitting seat and thighs. Leg openings fit over work boots.