17oz Duck Cargo Pants - Brown IH-743-BRNIH 743 BRN Iron Heart's classic cargo pants, cut from 17oz Japanese duck canvas. Designed for a traditionally relaxed fit, these cargo pants exemplify the military grade engineering that has become synonymous with Iron Heartwith features including triple needle stitched seams, brass rivets, heavy twill cotton pocket bags and reinforced belt loops. 17oz Japanese DuckSee 'Cotton Duck'. Canvas Brown 100% Cotton This fabric will slowly fade through wear