Minimum Squared is a small workshop owned by a Spanish couple (one is an engineer, the other a language teacher). They handcraft a number of minimalist wallets using full-grain goat leather from England, waxed linen thread from France, and woven braided elastic from their own country of Spain. And boy, are they ever gorgeous.

Here's what it looks like to open and close one:

The wallets come in a variety of leather + elastic color combinations. The Blue-Orange is pictured above, and the Tan Brown-Dark Blue is below:

All of their wallets have four card compartments, the left two each able to hold two cards, and the right two each able to hold three cards (so 10 cards total). There's also a larger slot that can fit most international cash currencies fine.

Each wallet is €150 (or ~$173 USD) at Minimum Squared.