9-ounce, 98% cotton, 2% spandex FR canvas Meets the performance requirements of NFPA 70E UL® classified to NFPA 2112 Built to move with Rugged Flex® stretch technology Mid-front rise sits slightly below the waist Comfortable fit through hip and thigh Brass zipper fly with high temperature-resistant FR zipper tape Arc-resistant button closure at waist Higher back rise for added coverage Stronger sewn-in-seam belt loops Leg opening fits over boots Carhartt FR label sewn on back pocket NFPA 2112/CAT 2 label sewn on waistband Two reinforced back pockets Cell phone and utility pocket Imported