Personalized Dinosaur Astronaut 2nd Birthday Toddler Long Sleeve T-Shirt. Dinosaur Astronaut is floating in space with a 2 balloon celebrating its 2nd birthday. Cute birthday gift for your two 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.