Men’s Patagonia Workwear Iron Forge Hemp Canvas Barn Coat Great Condition STY27795 Color DKAS Dark Ash Men’s Small (Runs large, fits like a Medium) Built from our hardworking 12.9-oz Iron Forge Hemp™ canvas, which is 25% more abrasion resistant than conventional cotton duck canvas and needs no break-in, this durable insulated work coat is made for tough tasks in cold conditions.