Personalized Dino Egg 1st Birthday Toddler Long Sleeve T-Shirt. A baby dinosaur pops out of his egg wearing his first birthday hat. Happy birthday to the one year old! 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.