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 2XL

Products

Sort by: Product Price Default
Warning Engage Brain T-shirt
Printed on Front and Back

Front upper left chest: Stylized "Think" logo.
Back: "WARNING: Engage your brain before opening your mouth. In case of malfunction or loss of control, stop, back up, and try again."
Available in Ash Gray, White, or Yellow.

Price: $20.

SCIENCE! T-shirt
Comes in Adult and Youth sizes.

"SCIENCE!" spelled out using the shapes of various science-related items.

Price: $20.

Properties of Math Dept. T-shirt
Printed on Front and Back.

Front: "Properties of Math Dept."
Back: "Properties of Math Department", followed by various additive and muliplicative properties.
Available in a variety of colors.

Price: $20.

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


Price: $20

Math to the Limit Calculus T-shirt
Printed on Front and Back. Available in Men's & Women's sizes.

Front upper left chest: Mathematical notation for "Limit as x approaches infinity of 1/x to the n"
Back: "Take Math to the Limit" accompanied by graph of f(x)=1/x2.

Available in Black, Navy Blue, Ash Gray, Cedar Red, and Metro Blue, depending on size.

Price: $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.

GeNIUS Chemistry T-shirt (Large, 2XL, 3XL, 4XL only)
Sizes 2XL, 3XL, 4XL only, and a slightly blemished Large.

What do Germanium, Nitrogen, Iodine, Uranium, Sulfur spell to a chemistry geek?
GeNIUS.

Price: $20.
Blemish Sale item: One Large for $18.

FIBBOOO Fibonacci Series T-shirt (2XL Only)
Size 2XL only.

The Fibonacci series (0, 1, 1, 2, 3, 5, 8, 13...) applied to the letters of Fibonacci's name (except that we skipped the zero). T-shirt is Black.
Currently available only in size 2XL. $16.