Personalized Grandma Rocks Women's V-Neck T-Shirt. Grandma Rocks text with a dancing rock is a humorous gift design for grandmothers on mother's day, birthdays, Christmas and special occasions. 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