Swooper Flutter Feather Flag ANTIQUES Black Yellow Flags are super-knitted outdoor quality polyester with exacting accuracy in brilliant colors. Reinforced sleeve and double stitching on flying edges for durabilty. Flag measures 11.5 x 2.5 feet. These flags are designed to be used with the poles that curve at approx. 45 degree at the top. These unique swooper flags draw attention to the full advertisement with a rippling effect in the slightest of breezes.