Pi

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Black
Royal Blue
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Pi is a very important concept, and if we had a little more brains and had paid closer attention in school we might have half a clue why. As it is, we're leaving it you to be the standard-bearer for this key mathematical principle. When you wear this tee or hoodie you'll be showing the world that you live and breathe Pi. This is the perfect item for making a splash at your next Pi day party.

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