This large 20x38 ft American Flag - Polyester US Flag with Appliqued Stars and Sewn Stripes offers the strongest, longest lasting material, developed for maximum durability in strong wind conditions and intense sun. These flags are made of tough 2-ply 100% spun polyester. They stand up to unpredictable weather conditions. Each flag has individually sewn applique stars and sewn stripes to provide long lasting beauty. Each flag is finished with tough polyester canvas heading and spurred brass grommets. Heavy 2-Ply Yarns for Extra Strength and Durability Extra Rugged Weave, Jet Dyed Withstands Wind, Sun, Dirt, and Moisture Outlasts Nylon and Other Acrylic Flags Excellent for Industrial/Institutional Use