Personalized Bob Youth T-Shirt. Bob Youth 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. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.