The Rucksack No.180 is made from our signature Horween® stone-washed leather, finished with solid- brass Italian hardware and is completely leather lined throughout. The stone-washing gives each rucksack its own authentic and unique appearance. You can read more about the stone-washing below. The entire process is proudly American made. We start with leather tanned at the Horween® tannery in Chicago, Il to the design and construction at our San Diego, California leather shop.