Carhartt's flame-resistant midweight canvas waist overall is quilt-lined for cooler days. Made of 8.5-ounce flame-resistant canvas, a blend of 88% cotton and 12% high-tenacity nylon, it has a 6.75-ounce flame-resistant quilt lining. It sits slightly below the natural waist and features a full seat and thigh, chap-style double-front panels, reinforced back pockets, ankle-to-thigh brass zippers with nomex zipper tape and self-fabric kick panels at the bottom of the leg openings. Main seams are triple-stitched for durability. Nfpa 70e compliant. read more about carhartt's a href=http://www.carhartt.com/webapp/wcs/stores/servlet/frmainview?langid=-1ands toreid=10051andcatalogid=10101anddescppc=personalprotectiveclothinga href= /a> flame-resistant line. field-tested 8.5-ounce flame-resistant canvas double-front panels ankle-to-thigh brass zippers with nomex zipper tape a href=http://www.carhartt.com/webapp/wcs/stores/servlet/frmainview?langid=-1ands toreid=10051andcatalogid=10101anddescppc=personalprotectiveclothinga href= /a> click here for technical information

• 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

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.Carhartt Sportswear - Mens