Personalized Structural Engineer League Toddler Long Sleeve T-Shirt. A red, white and blue design containing an I-Beam and structural engineer text is a fun gift for engineers and engineering students that are in a league of their own. 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.