Personalized Leprechaun In Training Youth Long Sleeve T-Shirt. Cute St. Patrick's Day Youth Long Sleeve T-Shirt - White with a green leprechaun's top hat and shamrocks says LEPRECHAUN IN TRAINING. Perfect for proud Irish lads and lasses on St. Paddy's St. Patty's Day. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)