Keep Calm And Code On - Geek Nerd Programmer 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 Keep Calm And Code On programming coding computer programmers coder program sarcastic quote textual saying cool gift ideas joke funny humor Lightweight, Classic fit, Double-needle sleeve and bottom hem