Personalized Math Wiz Youth T-Shirt. Math Wiz text with a heart dotting the letter i in the word wiz is a fun gift design for mathematicians, teachers and students at back to school, birthdays, holidays and graduations. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.