Little Big Mathematics Paper Wallet
Math geeks, behold. Now you can take these many formulas in your pocket with Little Big Mathematics paper wallet. With Tyvek paper as the main material, the wallet is waterproof, untearable, and lightweight. It also stays slim despite the 5 pockets designed for money, cards, and other bills. But be careful not to leave it on your table during exams, your teachers might take it away and accuse you for cheating!
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