Machinist shirt- Machinist flag us 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 machine, machinist, machinists, the machinist, machinist tools, machinist square, machinist ruler, machinist apron, machinist tools, machine shirt, machining Lightweight, Classic fit, Double-needle sleeve and bottom hem