While the seat base is being manufactured per the previous posts, all the remaining soft pieces are cut and sewed. This is what the leather and foam look like after begin cut and kitted for assembly:
You can see a piece of the neat snake-skin leather I was talking about.
Corbin gets all their leather from a single tanner in the San Francisco bay area. Mike Corbin said that the leather is the best quality they can find.
He likes to be able to call up and talk to, or easily visit, his suppliers...... so if at all possible, he works with people close to the facility, and smaller in size.