Pi Pie 1.25" Button
Love math? Appreciate circles? A fan of ratios? Celebrate Pi Day on March 14... or all year round (pun intended) with this circular pi pie button!
Designed by Button Button, these full color 1.25" diameter buttons are coated with a clear high-gloss UV & weather resistant mylar finish, are backed with a steel pin-back, and feature a high quality print.