Personalized Cute Pre-K Preschool Butterfly Youth Long Sleeve T-Shirt. Pre-K butterfly comes on Pre-Kindergarten Youth Long Sleeve T-Shirt - White teacher gift. Perfect for end of school gift giving or back to school. graphic c. Ne' Metzger. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)