Chicago Canvas & Supply offers top-notch durability with our Iron Horse Polyester Tarps. Iron Horse Polyester features a silicone-treated canvas/polyester blend fabric yielding the best of both worlds – great strength (twice as strong as cotton canvas!), breathable and waterproof. All Iron Horse Polyester tarps are also tear- and mildew-resistant, with a dry finish that won’t stain surfaces. See our variety of colors and choose from cut-size fabrics or fabric by the yard.