Women's Bi Fold Wallet Portland Leather Goods Bifold Wallet Slim Bifold Wallet Mens Leather Wallet Minimalist Card Etsy Men's Leather Slim Bifold Wallet Etsy Women's Billfold slim Bifold Wallet Men minimalist Leather Wallet for. The leather Wallet by Prada is a bifold model with an interior bill compartment and card slots for optimal functionality. The iconic enameled triangular plaque stands out on the front, while the brand's monogram is elegantly engraved on the inside. The leather interior lends a touch of luxury and quality to the design.