Mens Leather Bi-Fold Charging Wallet Rustic Brown. A modern update to the classic bi-fold. It discreetly holds a full iPhone 7 charge for an emergency or minimalist travelers. Made from minimally treated, vegetable-tanned leather from one of America's oldest tanneries. This wallet is designed to beautifully patina with time, creating a handsome, rich leather wallet with a look that is uniquely yours.