Sierra Supply Co. is a small workshop in San Francisco, born in and named for the Sierra Nevada. We make things we want to own — wallets, belts, key straps — and we keep adding to that list as our skills and shop grow. Everything in the store meets one standard: we'd carry it ourselves.

Sean and Manuel with the Oka Factory team, Chiba, Japan.

Our Standards

Every tool has a story. So do the people who make them.

The things we choose to bring into our workshop carry the experience, skill, and craftsmanship of the people who made them. We believe those stories matter. The makers behind our tools, hardware, and materials shape our work long before leather reaches the bench.

Some of the first tools we ever purchased came from Oka Factory in Japan. Fourteen years later, we found ourselves standing in that same workshop, meeting the family behind it—a brand that's been part of our journey from the beginning.

That same philosophy influences how we source everything we use. We seek out exceptional makers wherever we find them, whether that's California, Pennsylvania, Chiba, or Tuscany. We choose materials not just for what they are, but for who makes them.

Two men standing on a city street corner in front of a blue building, with one wearing a beige jacket and the other wearing a light blue striped shirt and a gray cap.

Sean and Manuel

Sean started making leather goods in 2012 — gifts at first, then a small run in a friend's shop, then years of quietly refining designs and technique. Sierra Supply Co. takes its name, and its whole sensibility, from the mountains where it started and where Sean and Manuel met. That landscape still drives the work: durable, useful goods made to be used and to last.

Manuel joined the bench after they moved to San Francisco, and the two have sharpened the process together — cleaner, more consistent, more refined with every piece. Sean designs and cuts every pattern. Manuel hand-stitches and finishes the leather, and runs the machine work for the canvas, Cordura, and denim pieces. Everything is drawn and cut in-house, and finished side by side.

Where this goes...

A storefront, eventually — and a wider table of goods. We're building it slowly, on purpose.

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