Personalized Traffic Engineer League Toddler Long Sleeve T-Shirt. Traffic engineers are in a league of their own. Fun gift design in red, white and blue with a road for engineers and students at back to school, birthdays, holidays and graduation. 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.