Made of 8.5-ounce FR canvas, a blend of 88% cotton and 12% high-tenacity nylon, these pants feature a full seat and thigh, straight leg openings, arc-resistant button closure at waist and two reinforced back pockets. Sits slightly below the waist. Meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112.