Flame-repellent, water-repellent, and tough as nails, these men's midweight overalls are ready for rugged work environments. They are made of Quick Duck canvas, which is a combination of cotton and nylon fabric and they have a quilt lining to the waist as well as warm insulation throughout. A double layer at the knees makes them durable enough for kneeling in the mud or snow. Standard sizes. For extended sizes, see style #2053228 . 8.5-ounce, 88% Cotton, 12% Nylon FR Quick Duck. 150g 3M Thinsulate Platinum FR insulation. Meets the performance requirements of NFPA 70E. UL classified to NFPA 2112; Carhartt FR and NFPA 2112 labels sewn on front pocket. High back with FR suspenders and FR side-release buckles. Multi-compartment bib pocket with zip closure. Brass zip fly with Nomex FR zipper tape; AFR melamine buttons at waist. Two large lower-front pockets. Two reinforced back pockets. Articulated knees for ease of movement. Double-layer knees with openings for adding knee pads and cleaning out debris. Brass leg zips with Nomex FR zipper tape and protective flaps with arc-resistant snap closures. Product care: Machine wash warm (Max 140F60C.) Do not bleach. Do not use hydrogen perox ide. Tumble dry low. Iron low heat. Do not use fabric softeners. Do not starch. May be dry cleaned. Imported.