Personalized Hydrologist Vintage Men's V-Neck T-Shirt. Authentic Hydrologist Men's V-Neck T-Shirt - White has Hydrologist a real classic vintage occupation logo. 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