Made of 13 oz. flame-resistant, 100% cotton duck and 11.5 oz. quilt lining. Bibs feature a high back with flame-resistant elastic suspenders, high temperature nylon center-release buckles, chap-style double front for durability, flame-resistant melamine button at waist, multiple tool and utility pockets, hammer loop, ankle-to-mid-thigh brass leg zippers with Nomex® zipper tape and protective flaps, and arc-resistant snap closures. Meets NFPA 70E and NFPA 2112 specifications.