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.

Adult Small

Products

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Neutrino Physics T-shirt (Small only)

Price: $17 .

T-shirt is Black. 100% pre-shrunk cotton.

Available only in Small.

Cogito Ergo Sum T-shirt (Small only)
Size Small only.
Printed on Front and Back

Available only in size Adult Small.
The Cogito Ergo Sum t-shirt features Rodin's Thinker.
Front: Rodin's thinker with the phrase Cogito, ergo sum.
Back: I think, therefore I add.
T-shirt is black. $19.

Carbon Based T-shirt

Carbon Based and Proud of It! Show your pride at being a carbon-based life form.
Black or Indigo Blue.

Price: : $20.

Dare to be Differential T-shirt

Front: Know Limits
Back: Dare to be Differential

Available in Stone Blue, Ash Gray, White, and Yellow.

Price: $20.

Derivers Wanted Calculus T-shirt (Small, 2XL, 4XL)

Available in Black or Indigo Blue. Available in 2XL and 4XL, and in Long Sleeve Black Small. Also, one Blemished Medium.

Price: $20.

Eat No Sleep Caffeine Molecule T-shirt
Sizes Adult Small, Adult Medium, Adult Large.

Pricing: $20..

Get Radical T-shirt
Available in Men's, Women's, and Youth sizes.

Upper left chest: "Get Radical" with stylized square root sign.
Back: "It's OK to like Math"

Price: T-shirts $20.

Human Genome Project T-shirt (Small Only)

Human Genome Project t-shirt closes in from human body, to cell, to a chromosome, to a strand of DNA.
T-shirt is White. Size Small only. $20.

Infinity T-shirt
Available in Men's and Women's sizes.

Front upper left chest: Infinity symbol surrounded by the words "Contemplate the infinite"
Back: "With Math, The Possibilites Are Infinite"

Available in Men's Small, Medium, and 2XL; in Women's Black Extra Small, Large, and XL.
Price: $20.

Intelligent Design T-shirt (Small Only)

"Funny, you don't look intelligently designed!"
T-shirt is Camel Brown. Size Small only.

Pricing: $20.