Patagonia Work Wear Used condition Size: 34 Color: Shelter Brown These rugged pants, the foundation of Patagonia's workwear line, feature double-layered fabric at the knees. They're made with our innovative 12.9-oz Iron Forge Hemp Canvas, which is 25% more abrasion-resistant than conventional cotton duck canvas, and provides the comfort of broken-in pants right from the start. Made in a Fair Trade Certified factory.