Boys Trains Cars Planes 3rd Birthday T-Shirt for Toddlers. 3 year old Birthday Train Shirt for Toddlers. Boys 3rd Birthday transportation train vehicles tShirt. Birthday Boy tee featuring Trains. Great for train themed three birthday party and toy trains. Love trucks trains space planes and things that go ? This is the tshirt for your little boy. Includes a train on the tracks & cars for a happy 3rd three birthday. Best transportation space birthday shirt gift for kids, toddlers, boys, girls, and youth. Lightweight, Classic fit, Double-needle sleeve and bottom hem