Personalized Yellow Best Contours Youth T-Shirt. Civil Engineers have the best contours text in a yellow topography design is a funny gift design for civil engineers and students at birthdays, holidays and graduation. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.