Personalized Grandma Light Shamrocks Women's V-Neck T-Shirt. Grandma text and an array of shamrocks with a green outline is a unique Irish gift design for grandfathers at birthdays, holidays, and St. Patrick's Day. 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