Personalized Pirate 3rd Birthday 3 Year Old Boy Youth Long Sleeve T-Shirt. 3rd Birthday Pirate number 3 Youth Long Sleeve T-Shirt - White gift for boys has colorful 3 wearing a pirate hat. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)