Personalized Greatest Grandpa Toddler Long Sleeve T-Shirt. World's Greatest Grandpa Toddler Long Sleeve Tee - Black gift has vintage style logo on a Father's Day or new Grandpa gift for him in blue and tan. 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.