ComputerGear Authentic Scientist T-shirt Let everyone know wearing Authentic Scientist T-shirt Show everyone you're genuine wearing funny science shirt Heather Grey 90% cotton / 10% polyester T-shirt S fits 34-36 in. chest/bust, M fits 38-40, L fits 42-44, XL fits 46-48, 2XL fits 50-52, 3XL fits 54-56, 4XL fits 58-60. A ComputerGear copyrighted/trademarked design. Designed and printed in USA by ComputerGear only; DON'T BUY COUNTERFEIT ITEMS FROM OTHER SELLERS