Economically-priced 5.3 oz. 100% Solution-Dyed Marine Polyester with polyurethane finish coating. 300 Denier x 300 Denier. Poly-Flex II colors are part of the polyester fiber itself so the color goes completely through the fiber instead of being just on the surface. Lightweight and strong. Good resistance to tearing, fading and rot. Good sun blockage. Durable water repellency, UV and mildew resistant finish. Breathable to help allow interior moisture to escape. (3 Year Limited Warranty).