American Flag 3ft x 5ft Valley Forge Koralex-With 6 months warranty. 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. We also offer our Flags connections Polyester American flags, which are less expensive. Our most durable 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.