Pioneer "Stock" Wallet
The Pioneer “stock” wallet is born. This product is the oldest and best-selling design from Pioneer with two pockets for storing cards and a money clip inside, featuring a low profile for that minimalist feel. It is made with vegetable-tanned shoulder leather and finished with a really pretty brown dye. It is then stitched with a tan thread and finally sanded, skived, and burnished to finish it out. Made in the USA.
I bought this to use to keep my cards/oyster card in and it's ideal. You can fit 4 cards in and I love that you can still carry cash too.