Linux Penguin Throws an Apple Through the Window Funny 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 Linux penguin throws an apple through the window funny shirt makes an excellent gift for a friend, family member or coworker This tee shirt will make smile the people around you Lightweight, Classic fit, Double-needle sleeve and bottom hem