FRB004 - M FR Utility Denim Jean Carhartt's flame-resistant Relaxed Fit Utility Jean resists flames, not hard work. Constructed of rugged 14.75-ounce, 100% cotton FR denim, it features an arc-resistant button at the waist as well as a brass zipper with Nomex® FR zipper tape. Built tough, it includes two reinforced back pockets and Carhartt strong double-stitched main seams. Comfortable, too, this jean comes garment washed for a soft finish, sits at the waist, and features a relaxed-fitting seat and thighs. Leg openings fit over work boots. • Meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112