Personalized Math Wave Women's V-Neck T-Shirt. Math in colorful 3D Letters forming a wavy line is a unique gift design for teachers and students at back to school, birthdays, holidays and graduation. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit