Personalized Petroleum Engineer (Worlds Best) Women's V-Neck T-Shirt. Petroleum Engineer Women's V-Neck T-Shirt - Black engineering job shirt has a white and blue worlds best logo, a nice present for a thank you appreciation gift. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit