Personalized Baseball 5th Birthday Women's V-Neck T-Shirt. 5th birthday baseball boy. Baseball league style with bats and varsity letters. Cute sports theme for your 5-year-old's b-day. Happy Birthday five-year-old! 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