Genius The Periodic Table Can't Be Wrong Science Scientist Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 58% Cotton, 42% Polyester Imported Machine wash cold with like colors, dry low heat Periodically the periodic table provides some good humor. The "genius" tee is a great for lovers of science, chemistry, science fiction, medicine, or pharmacology. Every nerd, geek, bookworm, avid reader, and college student studying the sciences will love this shirt. The t-shirt is sure to be popular at school, the science lab, museum, planetarium, library, bookstore, and coffee shop. When not in the lab, the shirt is great for the scientist who likes studying, gaming, reading, writing, cramming, biking, cycling, weightlifting, experimenting, and theorizing. This premium t-shirt is made of lightweight fine jersey fabric Fit: Slim (consider ordering a larger size for a looser fit)