Midweight 8.5-ounce, FR canvas: 88% cotton/12% high-tenacity nylon Loose fit sits at the waist Generous fit through the seat and thigh with the most room to move Arc-resistant button closure at waist Brass zipper fly with Nomex® FR zipper tape Cell phone pocket on left leg and multiple utility pocket on right leg Two reinforced back pockets Triple-stitched main seams Straight leg opening Carhartt FR label sewn on back pocket; NFPA 2112/CAT 2 label sewn on coin pocket Meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112