School Bus Driver Shirt Funny Off Duty Do Not Disturb Gift 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 Funny School Bus Driver Shirt Reads: Off Duty School Bus Driver Do Not Disturb Until September with School Bus Varsity Style Lettering and other Teaching Related Graphics. Makes a Great End of the Year Gift! Lightweight, Classic fit, Double-needle sleeve and bottom hem