Waxed canvas is a 100% cotton material that has been impregnated with natural waxes top to bottom. This increases resistance to wind, water and cooler temperatures. The work vest features a tilted chest pocket for easy access and deep hand pockets that are sure to keep your belongings from falling out. Each raw copper rivet is backed with a leather washer to increase durability. We recommend measuring a good fitting garment against our sizing chart when choosing which size will fit you best. Model is 6 ft tall and weighs 165 lbs. He wears a medium.