40th Birthday Gifts For 40 Years Old Pi Day Math Geeks Shirt-FL

Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 65% Cotton, 35% Polyester, Imported, Machine wash cold with like colors, dry low heat, 40th Birthday Gifts For 40 Years Old Pi Day Math Geeks Shirt is also a great shirt to wear on Pi Day, March 14th every year. The shirt is designed to be fitted, for a looser fit please order a size up. This shirt is a perfect birthday gift for math nerd, geek, math student, teacher, professor, mathematicians, physics, physicist, science nerd, scientist, statistics, statistician, doctor, engineer, or anyone who love pie!, Lightweight, Classic fit, Double-needle sleeve and bottom hem