Work in potentially hazardous conditions with confidence wearing Carhartt Flame-Resistant Loose-Fit Midweight Canvas Pants for Men. These flame-resistant canvas pants are built to last through several seasons of hard work and are designed to meet the performance requirements of NFPA 70E. They are UL classified to NFPA 2112 and feature a Carhartt FR label sewn on back pocket and a NFPA 2112/CAT 2 label sewn on coin pocket. The brass-zip fly boasts Nomex FR zipper tape and an arc-resistant button closure at waist. These Carhartt jeans feature a cell-phone pocket on the leg, as well as multiple utility pockets. The loose original fitwith its generous cut and roomy feel through the seat and thighsis Carhartt's most generous cut, giving you plenty of room to kneel, bend, or squat. 8.5-oz. 88% cotton/12% nylon high-tenacity flame-resistant canvas. Machine wash. Imported.Manufacturer style #: FRB159. 8.5-oz. 88% cotton/12% nylon high-tenacity flame-resistant canvas Meets the performance requirements of NFPA 70E UL classified to NFPA 2112 Carhartt FR label sewn on back pocket; NFPA 2112/CAT 2 label sewn on coin pocket Carhartt-strong triple-stitched main seams Brass-zipper fly with Nomex FR zipper tape Arc-resistant button closure at waist Multiple utility pockets, including a cell-phone pocket 2 reinforced back pockets Straight leg openings Loose fit: roomiest cut with a generous fit through the seat and thighs