Personalized 1st Birthday Trucks Women's V-Neck T-Shirt. Big yellow trucks bring a giant number one and a cupcake with a single candle as a special delivery to the one-year-old's first birthday party! 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