Slim Sleeve Wallet - BlackIn an effort to deliver the slimmest and most sustainable wallet, Bellroy has come up with what they are calling their Nude Approach. By almost exclusively using vegetable tanned leather and thread that means no unnecessary liners and creating as little waste as possible, their Slim Sleeve has the most slender profile of all their bi folds. Still, it carries up to 12 cards and some folded bills, offering more than enough room for most. 4 12 card