Personalized Senior Year Rocks Women's V-Neck T-Shirt. Senior Year rocks text with three happy rocks holding 12th Grade flags is a funny gift design for parents, high school teachers and students. 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