Personalized Scientist Chemist Eat Sleep Science Repeat Long Sleeve T-Shirt. Science teachers and students will laugh at this eat sleep science repeat design that is great for a biologist, chemist and more Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL