These men's Carhartt FR jeans offer protection and comfort on the job. Made of flame-resistant denim with enough flex for easy movement. Cut for a straight fit that's closer to the body through the seat and thigh with a straight leg opening that fits over boots. Features 12.5-ounce, 98% cotton / 2% spandex FR denim Meets the performance requirements of NFPA 70E and ASTM F1506 UL® classified to NFPA 2112 Built to move with Rugged Flex® stretch technology Comfortable fit through the seat and thigh with more room to move and a straight leg opening Brass zipper fly with Nomex® FR zipper tape Arc-resistant button closure at waist Stronger sewn-on-seam belt loop NFPA 2112 / CAT 2 label sewn on waistband Carhartt FR label sewn on back pocket Two reinforced back pockets Imported Flame-Resistant Rugged Flex® Relaxed Fit 5-Pocket Jeans