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 Not Flat We Checked Not Flat Earth Shirt Funny shirt for scientists, astronomers, astrophysicists, cosmologists, geologists and earth scientists. Lightweight, Classic fit, Double-needle sleeve and bottom hem
