Programmer Binary 'No' T-Shirt. 'No' in binary! Tee 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 For Programmers everywhere! Perfect to wear at home or out on the town. A fantastic programming themed T-Shirt which comes in 5 colors. Lightweight, Classic fit, Double-needle sleeve and bottom hem