All You Need is Love Math Mathematics Geek Love 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 Even math teachers, mathematicians, engineers, rocket scientists, and astronauts need love. Use this shirt to declare your love to your boyfriend, girlfriend, wife, or husband in the nerdiest way possible. The tee is perfect for students, teachers, instructors, professors, geeks, and nerds who like unique and funny ways to say everyday phrases. Wear your shirt to school, work, the beach, the library, cafe, coffee shop, bookstore, and the gym. It's great to wear not only on Valentine's Day, but also when you're studying, reading, writing, doing homework, cramming, jogging, walking, running, biking, or working out. This premium t-shirt is made of lightweight fine jersey fabric Fit: Slim (consider ordering a larger size for a looser fit)