Personalized Penguin 1st Birthday Women's V-Neck T-Shirt. Penguin holds a birthday balloon with a 1 on it. Cute on a onesie! Happy 1st b-day one 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