Personalized Black Math Universe Long Sleeve T-Shirt. Math is the language of the universe text in black and white. Fun gifts for math lovers at birthdays, holidays, graduation and back to school. 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