Personalized Be Who you Want to be Toddler Long Sleeve T-Shirt. Be exactly who you want to be, and nothing else. Be Who you Want to be Toddler Long Sleeve Tee - Heather, featuring Bob from "Bob is a Unicorn" by Michelle Nelson-Schmidt. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.