Personalized Race Car 1st Birthday Women's V-Neck T-Shirt. Race Car with the number 1 on it for a baby boy 1st Birthday is fun and colorful and comes on a party Women's V-Neck T-Shirt - Aqua gift. art c. Ne Metzger 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