Built to weather the cold our sandstone waist overall features a 100% nylon lining quilted to midweight polyester insulation. The overall is made of 12-ounce 100% cotton sandstone duck sits slightly below the natural waist and is cut with a full seat and thigh. Chap style double-front panels add durability and the double knees have cleanout bottoms to accommodate knee pads. There are Cordura® kick panels at the leg openings reinforced back pockets and triple-stitched main seams. Full ankle-to-thigh leg zippers with protective wind flaps.