This t-shirt features a whole scientific Periodic Table of Elements in vibrant colors of bright blue, yellow, green, red and lilac purple. Beneath this chemistry chart is the funny, ironic humorous science-pun text that reads: I wear this shirt periodically. Lightweight, Classic fit, TearAway label, Double-needle sleeve and bottom hem This tshirt would make a fun gift for anyone who loves science, chemistry, physics or biochemistry, be it a high school student, college or university undergrad or graduate majoring in chemistry, physics or science, or even for a professional chemist working in research, or physicist researcher. It's great for anyone who appreciates sci geek / nerd humor and word play! 4.5 oz 100% Combed Ringspun Cotton, machine wash cold with like colors, dry low heat