Annin Flagmakers dyes its own Nyl-Glo ColorFast U.S. flags. It is guaranteed to retain ColorFast for at least one year. Large, vivid stars are richly embroidered with ultra-bright polyester thread. The seams are double-needle stitched with premium, extra strength polyester thread, color-matched to stripes with back-stitch reinforcement. Four rows of high strength lock-stitching on the fly ends reduces fraying and extends the flag's life. Sturdy, weather resistant brass grommets provide greater flag security. Details: Red, white and blue 4ft. x 6ft. 1 U.S. flag DuPont's SolarMax™ nylon flag material provides the best resistance to damaging ultraviolet radiation 1 year colorfast guarantee