Personalized Future Scientist Chemist Chem Teacher Youth Long Sleeve T-Shirt. Colorful test tubes are bubbling and boiling on this fun Future Scientist Youth Long Sleeve T-Shirt - Royal Blue for kids who want to make science or chemistry their profession. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)