Here's the maximum in tough overalls for cold conditions. Top quality 100% cotton in a rugged 12-ounce weight and lined with 100% nylon quilted, polyester arctic-weight lining. Our warmest overall lining! Features zipper fly, multiple tool and uility pockets, a hammer loop, handy leg zippers that pull up to the knee (with protective wind flaps), and double knees (with cleanout bottom) to accommodate knee pads. It's all been fabric tested to insure wear resistance. And it's been on-the-job tested to insure comfort and warmth for your coldest jobs.