Carhartt Men's Sandstone Waist Overall Quilt Lined Work Pant 100% Cotton Machine Wash 12-ounce, 100% cotton sandstone duck. 100% nylon lining quilted to midweight polyester insulation. Sits slightly below the natural waist. Full seat and thighs. Long-wearing, chap-style double-front panels. Double knees with cleanout openings to accommodate boots