Those Who Ask Will Never Know.. U.S.Veteran 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 U.S. Veteran- Those Who Ask Will Never Know- Those Who Know Will Never Ask Veterans Gift Lightweight, Classic fit, Double-needle sleeve and bottom hem