Protective apparel is always a smart investment! Our regular length men's deluxe insulated bib overalls are water repellent and feature reinforced double knees, full Nomex® taped ankle-to-hip brass zippers with concealed snap closure, and elasticized shoulder straps with non-conductive adjustable hardware. The outer shell is made of flame resistant, 11.0 oz. (390 g/m sq.) duck, 88% cotton/12% nylon. Insulation package: 12 oz. (405 g/m sq.). HRC rating 4, ARC rating 44 calories/cm sq. Lining: 100% cotton. Insulation: 100% Modacrylic.