Personalized Worlds Best Biologist Women's V-Neck T-Shirt. Buy a fun World's Best Biologist Women'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. 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