Personalized 4th Birthday Fire Truck Toddler Long Sleeve T-Shirt. 4th Birthday Fire Truck - This cute fire engine is wearing a firefighter helmet and bringing in a big red four for your fourth birthday! 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.