Midweight, 8.5oz., FR quick duck: 88% cotton 12% nylon with Rain Defender durable water repellent, insulated with 150g 3M Thinsulate platinum insulation FR, high back with FR elastic suspenders and FR side release buckles, bib pocket with zipper closure, chap style double front enhances durability, brass zipper fly with Nomex FR zipper tape, FR melamine buttons at waist, articulated knee enhances ease of movement, multiple tool and utility pockets, brass leg zippers with Nomex FR zipper tape and protective flaps with arc resistant snap closures, Carhartt FR and NFPA 2112 labels sewn on front pocket, meets the performance requirements of NFPA 70e and is UL classified to NFPA 2112.