Personalized Structural Engineer Beam Youth T-Shirt. Structural Engineer text with a steel beam. This I-Beam design makes a unique gift for your favorite engineering geek 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.