50% off storewide closeout sale!

This is a going-out-of-business sale. This was started as a family business, and since my divorce several years ago, my heart hasn't been in it. So I'm moving on.

Everything is 50% off, while it lasts! The discount happens as soon as you put something in your cart.

Several designs are completely sold out and no longer available, and most shirts have sold out in one or more sizes.

Click here to see shirts listed by sizes that are still available.

Click here for for Women's shirts sorted by available sizes.

Click here for for Youth shirts sorted by available sizes.

Orders over $200 get a 15 percent discount and free USA shipping; orders over $400 get a 20 percent discount and free USA shipping.

Pi T-shirts


Women's Pi T-shirts
9 products

Youth Pi T-shirts
8 products

Featured products

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Products

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Apple Pi T-shirt (2XL, 4XL)

What do you get when you divide the circumference of an apple by twice its radius?
Apple Pi.

Price: $20.

Be Rational Get Real i vs pi T-shirt - Sold Out

Available in Women's premium ringspun Hanes Nano classic fit XL.

Price: $20.

Cherry Pi Women's Math T-Shirt
Cherry Pi: The first nine digits of Cherry/Lemon/Apple Pi. $20.
Chinese Pi Women's Tank Top
The Chinese symbols for "Circle Circumference Ratio", i.e. Pi. $20.
Easy as Pi T-shirt - SOLD OUT
As seen on TV in the Numb3rs episode "Atomic Number 33".
BEST SELLER. Comes in Adult, Women's, and Youth sizes.


Price: $20.
Key Lime Pi T-shirt (4XL only)

Key Lime Pi T-shirt features a key, a chemical formula for lime, and the Pi symbol.
Black 4XL only.

Price: $20.

Lemon Pi Women's Math T-Shirt
Lemon Pi The first nine digits of Lemon Pi.

$20
Peace of Pi Kanji T-shirt (Youth Small only)
The Japanese/Chinese character for Peace, surrounded by digits of Pi, printed on a blue Tie-Dyed t-shirt.

Available in Youth Small (6-8) only.

Price: $20.
Pi By Numerals Math Geek T-shirt
Available in Adult Large and 4XL; Women's 2XL; Youth Small (6-8) and Medium (10-12).

A few thousand digits of Pi, arranged so that you can read them in continuous order through the shirt, printed in the form of a Pi symbol. Available in Men's, Women's classic fit, and Youth sizes.

Pi Digits T-shirt
BEST SELLER
Available in Adult, Women's, and Youth sizes.


Price: $20