Personalized Biology Sphere Men's V-Neck T-Shirt. Biology the is science of life. This colorful design makes a great gift for students, teachers, and medical professionals at birthdays, holidays, graduation and back to school. 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