Slim Bifold Wallet Leather Wallet Custom Men Billfold Etsy Mens Wallet Leather Slim Bifold Minimalist Guys Billfold With Etsy Men's Slim Bifold Wallet Slim Bifold Wallet Digital Electro Shop Women's Billfold slim Bifold Wallet Men minimalist Leather Wallet for Slim Leather Bifold Wallet For Men & Women Slim leather wallet, Bi. 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.