Tough and flame resistant cargos. • Midweight 8.5 ounce, FR canvas: 88% cotton, 12% high-tenacity nylon • Original Fit sits slightly below the waist • Full seat and thigh, straight leg opening • Arc-resistant button closure at waist • Two reinforced back pockets, two side cargo pockets wtih pen slots • Meets the performance requirements of NFPA 70E standards and is UL.