That's What I Do, I Drink And I Know Things T Shirt Drinking 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 This is a great t-shirt for drinking with your buddies and showing them how smart you are because your read lots of books. So you know lots of stuff. Lightweight, Classic fit, Double-needle sleeve and bottom hem