Personalized Brainy Engineer 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. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL