Details: Printed with the first 2940 digits of the calculation of pi (pi=3.1415927...) in the classic Dot Matrix printer font on standard blue bar fan-fold paper complete with tractor holes. The Mighty Wallet is tear-resistant, water-resistant, expandable and, most importantly, recyclable. Made from Tyvek (think express mail envelopes), the Mighty Wallet resists tearing because of thousands of interlocking plastic fibers spun in random patterns giving the wallet incredible strength. The ingenious origami design reinforces that strength by using a single folded stitch less construction allowing the wallet to gradually expand and adapt to meet your own personal storage needs. The Mighty Wallet will expand right before your eyes. Because of the slim, lightweight and water resistant features, you can take your Mighty Wallet anywhere. It makes a great 'night out' wallet for a slender silhouette and the writable surface conveniently acts as a quick note pad on the go. In time, the Mighty Wallet will gradually soften and patina but, even after years of wear, it will still offer surprise and solicit intrigue. Other key features include 2 interior pockets, 2 inward facing credit card pockets (hold approx 16 cards) and 2 quick access business card pockets.