Nike Air Force 1 Vac Tech SupremeNike created an extremely crisp and clean sneaker with the Nike Air Force 1 Vac Tech Supreme. They feature Vac Tech construction, which creates a sophisticated, virtually seamless, unibody upper similar to the Air Force 1 Foamposite. Plus, this unique construction enables this black Air Force 1 to have a "washed out" look, which is different than any other AF1 ever created.