Personalized Math Text Heart Long Sleeve T-Shirt. Colorful text repeating the word math forming the shape of a heart is a fun design for mathematicians, students and teachers. 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