Personalized I'm One Superhero Girl Women's V-Neck T-Shirt. I'm One! Superhero toddler girl in a pink cape, hair bow, and diaper is ready to fight crime and nap time. Cute gift for any superhero one year old's 1st birthday. 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