The work-fit and performance fabrics in this bib overall are what make the difference! Made of durable, 13-ounce, 100% cotton duck, this bib features a high back with FR elastic suspenders and high-temp, nylon, center-release buckles. The chap-style double front is equally rugged and provides increased thermal performance. The zip-to-mid-thigh brass leg zippers have Nomex® zipper tape, as does the brass fly zipper. The leg zippers also have a protective flap and arc-resistant snap closures. FR melamine buttons are located at the waist, and there are multiple tool and utility pockets as well as a hammer loop. And like all Carhartt workwear, it's been job-tested for wear-resistance and reliability.For over 115 years, Carhartt has manufactured premium workwear known for exceptional durability, comfort, quality of construction, and fit that you can feel in the fabrics and see in the performance.