Good grammar is sexy. Funny Humor Nerd 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 We have great tee's for any occasion or day! Check out all of our funny, sports and popular products! Lightweight, Classic fit, Double-needle sleeve and bottom hem