Mathematician? Or mathematician at heart? At least, do you enjoy laughing about math?

The Klein Four Store is your source for apparel and gifts with a mathematical bent. Visit http://www.kleinfour.com for more information on the Klein Four, the premiere a cappella / variety group in the world of higher mathematics.

This shop is the exclusive CD printer and distributor for Klein Four's soon-to-be-hit album, Musical Fruitcake. Now available! Click below to purchase.

MUSICAL FRUITCAKE Get the Klein Four's eagerly-anticipated debut CD!	Math Apparel Amused by math? These are your clothes. Unisex items and designs.	Women's Apparel Clothing for the mathematically-minded lady. Show off your XX potential!
Guy's Apparel The ladies might be too bashful to wear these crude-ish designs. But that doesn't mean they're not hilarious!	Random Apparel Not exactly math, but if you get it, you get it.	Wall Adornments Posters, stickers, clocks, and more!
Gifts Teddy bears, coffee mugs, ...	NEW! Multiplication Table Poster $16.99	NEW! XX Potential Black T-Shirt $19.99