Personalized I Beam U Beam Youth Long Sleeve T-Shirt. Images of a steel I-beam and a piece of channel with the text I Beam, U Beam, we all beam is a funny gift design for construction workers, structural and civil engineers, steel detailers, drafters and engineering students youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)