Personalized Environmental Eggineer Long Sleeve T-Shirt. Eggineers are engineering eggheads and this humorous egghead, muddy and wearing a respirator with environmental eggineer text, is a unique gift design for birthdays, holidays or 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