Flags Inc F1 OFFICIAL BLACK FLAG BANNER 3 X 5 ft BestFlyability. 100% Du Pont Nylon. Screen Printed, not stamped. One-Sided. Two Cords to Attach. Lifetime Durability Guaranteed. Resists All Weather Conditions. For indoor or outdoor use. Washable. Best Resistance to Damaging Ultraviolet Radiation. Longest Lasting Nylon Flag Material. Printed with high quality inks to insure a virtually lifetime impression durability.