New 3x5 Washington State Flag US USA American Flags Material: Polyester Size: 3' x 5' (36" x 60") Includes 2 Brass grommets for hanging The flag of the U.S. state of Washington was adopted in 1923 and consists of the state seal (which bears an image of George Washington) on a field of dark green with gold fringe being optional. It is the only U.S. state flag with a field of green as well as the only state flag with the image of an American president.