Our flame-resistant duck bib overalls add warmth to your workwear. They are composed of 13-ounce, flame-resistant 100% cotton duck. They feature a quilt lining, a high back with flame-resistant elastic suspenders and high temperature nylon center-release buckles. They also have a 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.