Personalized Mechanical Eggineer Men's Tank Top. Eggineers are engineering eggheads and this egg with gears in hand and on it's hard hat with mechanical eggineer text, is a humorous design to tickle your mechanical engineer's funny bone at birthdays, holidays and graduation. Pre-shrunk 100% cotton 6.1 ounce Quarter turned Adult: S, M, L, XL, 2XL