Made from 100% SolarGuard Nylon, America's No. 1 choice for Flags. Heading is sturdy duck with strong brass grommets. Durable and fast-drying. As the colonial forces took on a national aspect it became necessary to provide a national Flag for them. Out of this situation came the Grand Union or Cambridge Flag with its field of thirteen alternate red and white stripes, which symbolized the union of the 13 colonies, and the King's Colors in canton.