Personalized Bulldozer 1st Birthday Women's V-Neck T-Shirt. 1st Birthday Bulldozer Women's V-Neck T-Shirt - Red has number 1 and room to add a personalized name for your one year old on their birthday party 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