Personalized Brainy Engineer White Text Toddler Long Sleeve T-Shirt. Engineer text above a happy brain is a humorous gift design for engineers and engineering students who love to design and solve problems. 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.