Personalized Structural Engineering Smile Men's V-Neck T-Shirt. Structural engineering text forming a smiling face with the text makes me smile is a humorous structural engineering design for birthdays, holidays nad graduation. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem