Keep calm and let the CONTROLS ENGINEER handle it 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 Keep calm and let the CONTROLS ENGINEER handle it Keep calm and let the CONTROLS ENGINEER handle it Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem