The soft, ring-spun cotton of this t-shirt is also long-lasting. With a classic fit and seam-free body, you'll want to wear it every day. 100% soft ring-spun cotton (Sport Gray is 90% ring-spun cotton, 10% polyester; Dark/Navy Heather is 65% polyester, 35% cotton.) Modern classic fit Tubular body Double-needle sleeve and bottom hems Taped neck and shoulders Ribbed collar Wash cool, hang dry or tumble dry low Cool iron inside-out

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Funny design. This hilarious and educational tee is a must have for any chemistry or physics professor, math student, or anyone who appreciates the joy of solving equations. Great idea for teacher appreciation. Science Teacher Vibes Back To School outfit for Teachers to wear on the first day of school. This retro back to school Science with periodic table of elements forTeacher tee is perfect for men, women, on the first day of school.