Personalized Worlds Best Biologist Men's V-Neck T-Shirt. Buy a fun World's Best Biologist Men's V-Neck T-Shirt - White as a gift for a biology major, biologist, biology teacher too. Great looking sports style logo in navy blue and tan. 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