As with all of John Lofgren's boots, these were developed slowly and carefully from last to leather. There are no cost-cutting measures or shortcuts in these boots. Where you might find plastic or fiberboard in similar boots, these have full-grain leather and real cork filling. Even the layer between the leather midsole and the Vibram wedge sole is EVA rather than cheap hard plastic, creating a sneaker-like level of comfort from the first day of wear.
The uppers are Whiskey Horween Cavalier leather, a similar tannage to Horween's famous Chromexcel leather without glazing, but with the same pull-up and soft-break in as Chromexcel. The hardware in made in Japan and the Vibram soles come from the USA.