Personalized Wave Surfer Youth Long Sleeve T-Shirt. Wave surfer in electronic text with a wavy line is a humorous twist on the concept of wave surfing. Fun gifts for engineers and college students at back to school, birthdays, holidays and graduation. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)