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

Sort by: Product Price Default

Products

Sort by: Product Price Default
Pi Digits T-shirt
BEST SELLER
Available in Adult, Women's, and Youth sizes.


Price: $20

Pi Irrational But Well-rounded T-shirt
Printed on Front and Back.

Available in Adult t-shirt, Adult Sweatshirt, and Youth t-shirt. Front upper left chest: Pi symbol in a circle.
Back announces your true nature: "Irrational but Well-rounded"
Available in Ash Gray, White, Yellow, Lime Green, Dark Blue, and Light Green, depending on size.
Adult Sweatshirts available in Gray Medium and Gray 3XL.

Pricing: T-shirts: $20; Sweatshirts: $23.
Blemish Sale items: One Stone Blue XL at $15; one Yellow XL at $18.

Pi Symbol Glow T-shirt
Glows in the dark!
Comes in Men's, Women's, and Youth sizes, and in Men's Long Sleeve.

Price: $20.

Pi-Lingual Math T-shirt - SOLD OUT

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. Available only in Small and 2XL.

Price: $20.

Pi-rate Math Geek T-shirt

Available in women's sizes, and in youth small (6-8).

Price: $20.

Super Pi T-shirt (Small, 4XL)
Available in Adult 4XL and in Women's.

Price: $20.