Personalized Triangle Egghead Women's V-Neck T-Shirt. An egghead with a triangle is a cute musical design for percussion musicians, students and teachers at back to school, marching band season, 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