Personalized Petroleum Engineer (Worlds Best) Men's V-Neck T-Shirt. Petroleum Engineer Men's V-Neck T-Shirt - Charcoal engineering job shirt has a white and blue worlds best logo, a nice present for a thank you appreciation gift. 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