Personalized 3rd Birthday Express Youth Long Sleeve T-Shirt. Colorful choo choo train. Car number 3 is filled with balloons and gifts. Smoke stack says ALL ABOARD THE BIRTHDAY EXPRESS Youth Long Sleeve T-Shirt - White for a 3rd birthday. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)