Pi Hard Navy Adult T-Shirt Color:Blue featuring a New York shamrock

featuring a New York shamrock graphic in lightly distressed white print

One of these things is not like the other: scores of Spongebobs mingle with a single neon jellyfish in an all-over collage print on this tan cotton t-shirt

A unique t-shirt based on a classic Grateful Dead tune

the deep red jacket is decorated with an all-over black horse silhouette print

This grey cotton t-shirt features a distressed black star on the front

Pi Hard Navy Adult T-Shirt Color:Blue featuring a New York shamrockDo you just go crazy over numbers? Love some pi? This blue, 100% cotton shirt sleeve t shirt features "Pi Hard". Grab this for yourself or a fellow math lover.