Personalized Math Jigsaw Women's V-Neck T-Shirt. Math spelled with interconnecting jigsaw puzzle pieces is a fun gift design for birthdays, holidays, graduation and back to school. 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