Nerdy by Nature Math Pi Nerd Shirt for Men, Women, Kids-TH

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, Nerd Shirt with clean and simple design, Nerd T-Shirt style in black and many different colors, perfect as a gift, Lightweight, Classic fit, Double-needle sleeve and bottom hem