13-ounce 100% cotton FR duck - High back with FR elastic suspenders and FR center-release buckles - Chap-style double-front enhances durability - Brass zipper fly with Nomex FR zipper tape - FR melamine buttons at waist - Multiple tool and utility pockets - Ankle-to-above knee brass leg zippers with Nomex FR zipper tape and protective flaps with arc-resistant snap closures - 13-ounce duck fabric is CGSB155.20-2000 certified - 2-inch contrasting trim (RT80 220C N3000) with 3M Scothlite Relfective Material (#9740) ANSI/NFPA 2112 approved reflective trim - 360 degree visibility with "X" pattern on back - Carhartt FR and NFPA 2112/CAT 2 labels on waist - Meets the performance requirements of NFPA 70E standards and is UL Classified to NFPA 2112 - CAT - 2 - ATPV (CAL/CM2) - 16.0