Personalized Plumbing Genius Men's V-Neck T-Shirt. Plumbing genius text with a pipe wrench is a unique gift design for plumbers and vocational technical students at 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