NEW!

Individually hand dyed Tie-Dye Pi T-shirt. Each shirt has a pattern and coloring somewhat similar to the shirt shown, but no two are exactly identical.

Pricing:
Adult Short Sleeve Small, Medium, Large, XL: $22; 2XL, 3XL: $25.

NEW!

Added by popular demand. (Don't get it? Read the shirt aloud.) Printed on relaxed women's fit shirt.

Pricing:
Adult Short Sleeve Small, Medium, Large, XL: $17 .

Celebrate Pi Day or just show your irrational side to 3045 digits.
Available in Black, White, Ash Gray, Pink, Stone Blue, Violet.
Long sleeves are Black or Ash Gray. Youth shirts are black.

Pricing: $14 to 19.

SALE! Youth Black are on sale for $10, while supplies last.
Adult Long Sleeve Ash Gray are on sale for $14, while supplies last.

The Greek letter Pi, ringed by the first 130 digits of the irrational number Pi. The symbol outline and the digits glow in the dark.

Pricing: $14 to $19.

As seen in the Numb3rs episode "Atomic Number 33". Area and Volume formulae are Easy as Pi when you wear this t-shirt.
Available in Black, Ash Gray, White, and Violet. Available in Adult Short Sleeve and Long Sleeve, and in Youth Short Sleeve .

SALE! Ash Gray Short Sleeve are on sale for $10, and Ash Gray Long Sleeve are on sale for $14, while supplies last.

T-shirt is Blue.

Pricing: $16 to $19.

The Pi-Lingual t-shirt features geometric diagrams for area and circumference of a circle, and a wide variety of advanced formulae featuring Pi.
T-shirt is Black.

Pricing: $17 to $19.

Front upper left chest: Pi symbol in a circle.
Back announces your true nature: "Irrational but Well-rounded"
Available in Stone Blue, Ash Gray, Violet, and White.

Pricing: $17 to $21.

Pi al a Mean, Pi a la Median, Pi a la Mode, with mathematical examples.
Available in Black, Navy Blue, and Ash Gray.

Pricing: $14 to $16.

SALE! Pi a la Mode t-shirts in Ash Gray 2XL are on sale for $10, while supplies last.

Our Pumpkin Pi T-shirt features digits of Pi carved into a pumpkin.

Pricing: $16 to $18.