These pants were built with a canvas contruction and lined with a warm fleece material. 8-ounce, 98% cotton / 2% spandex canvas; 2.3-ounce, 100% polyester knit flannel liningBuilt to move with Rugged Flex® stretch technologySits at the waist with a comfortable fit through the seat and thigh and a straight leg openingStrong, on-seam belt loopsReinforced front slash pocketFront and back pockets; Secure cell phone pocket on right legImportedVendor Style Number: 103342