This FR jean stretches and moves with you on the most demanding workdays. 12.5-ounce, 99% cotton/1% spandex FR Denim. Built with Rugged Flex to bend and stretch with you as you move. Relaxed Fit sits slightly below the waist. Relaxed seat and thigh. Garment washed for a soft finish. Arc-resistant button closure at waist. Brass zipper fly with Nomex FR zipper tape. Cell phone pocket on left leg and utility pocket on right leg. Two reinforced back pockets. Triple-stitched main seams for durability. Straight leg opening fits over boots. Carhartt FR label sewn on back pocket; NFPA 2112/CAT 2 label sewn on waistband. Meets the performance requirements of NFPA 70E and is UL Classified to NFPA 2112.