Personalized Future Cyclist Childs Bicyle Youth Long Sleeve T-Shirt. Future Cyclist Youth Long Sleeve T-Shirt - White for children who might enjoy cycling when they grow up has silhouette bicycle design, great for a family who believes in fitness and low carbon footprint green living. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)