Personalized 3rd Birthday Retro Robot 3 Year Old Boy Toddler Long Sleeve T-Shirt. celebrate your son's third birthday with this funny robot in vintage style 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.