Personalized About The Shamrocks Youth Long Sleeve T-Shirt. St. Patrick's Day Youth Long Sleeve T-Shirt - White with shamrocks and confetti says IT'S ALL ABOUT THE SHAMROCKS. Perfect for St. Patrick's Day celebrations and parades or for anyone who loves shamrocks. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)