Personalized Grandpa is my Hero Toddler Long Sleeve T-Shirt. My grandpa is a superhero! He is my hero! Comic book theme t shirt for your child to wear on Father's Day, or any day. Grandpa will love it! 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.