Personalized Pink World's Best Nana Women's V-Neck T-Shirt. Gift for the World's Best Nana has pink Grandma butterfly on Women's V-Neck T-Shirt - White. 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