Carhartt Men's Big & Tall Flame Resistant Canvas Bib Overall 88% Cotton/12% Nylon Imported Machine Wash Midweight 8.5-ounce, for canvas: 88% cotton/ 12% high-tenacity nylon High back with for elastic suspenders and for center-release buckles Chap-style double front enhances durability Brass zipper fly with nomex for zipper tape