The Berne Deluxe Insulated Bib Overalls pull out all the stops when it comes to warm and toasty workwear. The exterior is 100% cotton duck shell with quilted polyester insulation on the inside. The high-back design guards against frigid weather, adding even more warmth. Triple-needle stitching, reinforced pockets and nylon hems ensure this garment will hold up through many winters to come.