Historical 1776 American Flag Grand Union Flag T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat The first national flag of the United States Also known as Continental Colors, Congress Flag, and Cambridge Flag Lightweight, Classic fit, Double-needle sleeve and bottom hem