Personalized 4th Birthday Train Outfit Toddler Long Sleeve T-Shirt. 4th Birthday Train Toddler Long Sleeve Tee - White shirt for a boy has number 4 engine in red with colorful cars on this fun train themed party clothing or birthday photo tee. 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.