8.5-ounce FR canvas: 88% cotton/12% high-tenacity nylon - Loose fit - Sits slightly below the waist - Arc-resistant button closure at waist - Brass zipper fly with Nomex FR zipper tape - Cell phone pocket on left leg - Utility pocket on right leg - Two reinforced back pockets - Triple-stitched main seams - 19" leg opening fits over work boot - Carhartt FR label sewn on back pocket; NFPA 2112/CAT 2 label sewn on coin pocket - Meets the performance requirements of NFPA 70E standards and is UL Classified to NFPA 2112 - CAT - 2 - ATPV(CAL/CM2) - 12.1