Personalized Structural Eggineer Long Sleeve T-Shirt. Eggineers are engineering eggheads. Structural eggineer text and a structural engineering egghead wearing a hard hat and standing on a steel beam is a fun gift design for birthdays, holidays and graduation. 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