Personalized Biological Engineer Leaf Men's V-Neck T-Shirt. Biological Engineer on a black leaf is a unique engineering design. Fun gifts for bioengineers and college students at back to school, birthdays, holidays and 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