Personalized Smart Mechanical Engineer Men's Tank Top. Men's Tank Top - Athletic Heather with "Mechanical engineering, the profession for intelligent people" in rough text with the M in mechanical wearing a hard hat make a funny design with attitude for college students and engineers at back to school, birthdays, holidays and graduation. Pre-shrunk 100% cotton 6.1 ounce Quarter turned Adult: S, M, L, XL, 2XL