Personalized 2nd Birthday 2 Year Old Astronaut Toddler Long Sleeve T-Shirt. retro style 2nd birthday for little boy turning two has astronaut helmet 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.