Personalized Bob Youth Long Sleeve T-Shirt. Bob Youth Long Sleeve T-Shirt - Red, from "Bob is a Unicorn" by Michelle Nelson-Schmidt. Bob has a big imagination, and he can't be pinned down by ordinary definitions. He believes he is a unicorn, and he lets everyone know it. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)