The Mighty Wallet, 35 mm, is tear-resistant, water-resistant, expandable and, most importantly, recyclable. Made from Tyvek (think express mail envelopes) and eco-friendly ink. Its slim profile is useful for a night out and you can write any phone numbers you collect right onto the wallet. 2 interior pockets, 2 credit card pockets, holds approx 16 cards, and 2 quick access business card pockets.