Inspired by the floor design of factory cup cars to provide drivers a smooth flooring surface that enables the quick footwork demanded of track driving. Rennline s track mats are constructed from lightweight anodized aluminum and weighs less than two pounds. They fit precisely over the contours of Porsche floors and affix with velcro or can be permanently mounted if desired. For cars with molded one piece carpets, track mats fit directly over the non-removable floor carpeting and can be covered completely with the factory floor mats. perforated aluminum floorboard and fire extinguisher mount pictured not included.