I'm Not Lucky I'm Good 4 Leaf Clover 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 Perfect gift for friends and family t-shirt! For those that are just good Lightweight, Classic fit, Double-needle sleeve and bottom hem