Personalized Environmental Genius Women's V-Neck T-Shirt. Environmental Engineering, the profession for intelligent people with the letter E in engineering wearing a hard hat is a humorous engineering gift design for college students and engineers at back to school, birthdays, holidays and graduation. 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