Personalized 7th Birthday Robot Boys Robotics Women's V-Neck T-Shirt. 7th birthday colorful robot Women's V-Neck T-Shirt - Aqua with number 7 for a child turning seven years 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