Personalized Unicorn Birthday Train Women's V-Neck T-Shirt. A cute rainbow colored unicorn rides a steam train and lets the world know It's My Birthday! Cute gift for anyone who loves unicorns and trains. 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