Our design and manufacture is simple and precise. High-end laser equipment is used to accurately cut each pattern from selected hand cut pieces of leather that are carefully hand stitched for enduring usability.

From the leathers to the kraft cardboard packaging, passing through the renewable electricity used in our workshop we are focused on long term sustainability.

We source the materials for our wallets from selected international companies with long tradition and strong reputation which comply with international H&S and Environmental Standards.

The Story of Horween Leather

Our Slim Wallets (SW), Minimalist Wallets (MW) and Card Holders (CH) are made using the famous Horween leather from Chicago (USA). Founded in 1905 and currently on its 5th generation has been supplying quality leather for more than a century. It is one of the oldest continually run tanneries in the world and the leathers are still made by hand as when it was founded.

Chromexcel is one of the company's most traditional tannages. One of the original intentions for this leather was its usage in engine and motor seals, and was actually used for engine seals on tanks and other heavy equipment during World War II.

Its tannage undergoes at least 89 separate processes taking 28 working days and unlike many leathers is air dried.

Made to this day with old world craftsmanship, Chromexcel is the original pull-up leather; using time honored techniques and formulas that were developed nearly 100 years ago, and is still produced in the United States using a bark retannage from a proprietary recipe, and then genuine hot stuffed with Horween’s secret blend of natural oils and greases.

Chromexcel is characterized by a rich pull-up in full aniline, hand rubbed finishes and creates a unique patina over time.

minimumsquared materials ritza25 horween chromexcel leather

British leather, Spanish craftsmanship

Our Slim Wallet Elastic (SWE) model is made from Harmatan & Oakridge goat leather. This family owned and operated company, located in Higham Ferrers, Northamptonshire, United Kingdom, was established in the early 1980s and are known for their exceptional quality vegetable tanned goat leather. Thanks to the use of free range goats and a fully organic tannage they obtain a leather of unique smoothness and durability.

All the materials used for its tanning are natural and are sourced locally. The process takes many hours of highly skilled work and the tannage technique follows historic tradition, using only Sumac and other materials of pure vegetable origin. The leathers resulting from this process offer a supreme quality tanned skin that emphasizes the leather’s natural beauty and grain.

minimumsquared materials fil au chinois harmatan goat leather

Saddle stitch with Fil au Chinois and Ritza thread

We hand stitch every single product using the saddle stitch technique, which apart from being beautiful, results in stronger, more durable seams than using a sewing machine. We use the very best threads available on the market.
For the goat leather products we use French manufactured Fil au Chinois Lin Câblé waxed linen thread.

The Au Chinois brand was registered in November 1847 by François-Philibert Vrau, who had founded his business in Lille some twenty years before.
Until the beginning of the 20th century, Fil Au Chinois was in France and Europe, one of the most famous brands of yarn. For enthusiasts, this brand represents a kind of myth. The thread Au Chinois could have disappeared, if there had been the tenacious will of two industrialists of the North: Olivier and Bruno Toulemonde, aware of the small part of French heritage represented by the Au Chinois thread.

At minimum squared we’re happy to make our small contribution in supporting this new revival of cultural and industrial heritage that the Fil au Chinois represents to France, Europe and the World.

For cowhide products we use Ritza 25 polyester waxed thread manufactured in Germany by the Julius Koch company, founded by the Danish engineer of the same name in 1895.


The woven elastic band is manufactured in Spain under the OEKO-TEX® Standard 100 environmental certification.

minimumsquared materials oekotex woven elastic

Sustainable materials for the future

From Horween leather to our Kraft cardboard packaging, we want the wallets that we make and the materials that we use to be sustainable long term. We use renewable electricity in our workshop and we’re always looking for ways to reduce our impact on the world we live in.

minimalist wallet midori kraft packaging

We choose leathers and materials forged through craftmanship, then mix them with high-end laser technology. The result is a collection of wallets that are simple, functional and of exceptional quality.

slim wallet minimalist wallet cardholder veg tan leather collection

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