Spun Polyester is the most durable American flag on the market. The open weave reduces fabric stress and resists high winds. These flags are the best choice if you fly the flag 24/7 and your wind speed is higher. As these flags are made from heavier fabric they require a higher wind speed to "fly" than nylon flags. Also they require more effort to put up and take down. Koralex II looks like a coarse cotton. 100% US made, with sewn stripes and embroidered stars. Designed for outdoor use, resists fading and fraying. Canvas or nylon headings and brass grommets. Also consider our nylon American flags which are lighter to handle and fly in lower wind speeds. They also cost less money, but fray in a shorter time. Also Consider our Store Brand Polyester American flags, which are less expensive.Also consider our Super Tough American flags in sizes 3ft x 5ft to 5ft x 8ft, which are similar in durability but made of high tech Hercules fabric, which has a glossy finish. Because of the nature of the Super Tough material, flags may be longer than the size specified. This size flag is suitable for flagpoles from 28ft to 40ft. US Flag, Compare prices, durability and appearance. Click Here As a founding member of the Flag Manufacturers Association of America, Valley Forge educates the public and flag retailers about the significance of manufacturing American Flags in the U.S. For more information on Flag Manufacturers Association of America. Click Here Return to Valley Forge Koralex II American Flags (2-Ply Polyester) You May Also Like American Nylon Flags Residential Flagpoles