Personalized Nanotechnology Youth Long Sleeve T-Shirt. Nano Technology is huge text with a magnifying glass on Youth Long Sleeve T-Shirt - White make a funny science gift design for engineers, scientists and technicians working with the smallest structures. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)