Personalized I Byte Youth Long Sleeve T-Shirt. i Byte text is a humorous play on words "I bite" and a unique computer gift design for programmers, geeks and IT professionals at back to school, graduation, birthdays and holidays. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)