This Hot Pink Hello Kitty® design Mighty Wallet is made from a single folded sheet of Tyvek (super-thin, super-lightweight plastic microfiber material). Strong and durable (and super lightweight), it has 2 large pockets (for cash and receipts), 2 quick-access business card pockets, and 2 expandable credit card pockets to hold plenty of cards. They're printed with environmentally friendly ink, partially made from recycled materials, have a writable surface, and will stand up to years of use.