Dot Matrix Pi Mighty Wallet by Dynomighty

Geek Chic. Printed with the first 2940 digits of the calculation of π (pi=3.141593...) in the classic Dot Matrix printer font on standard blue bar fan-fold paper! The Mighty Wallet is tear-resistant, water-resistant, expandable and recyclable. Made from Tyvek (think express mail envelopes), these cool wallets resist tearing because of thousands of interlocking plastic fibers spun in random patterns, giving them incredible strength. The ingenious origami construction and stitch less design reinforces the materials own strength and allows these very slim wallets to instantly expand and adapt to your storage needs. Open dimension: W: 8" H: 3.25".