Introducing the Porsche Design Men's Sunglasses P8478-B-655. The timeless strength of an idea translated into an exclusive form. The iconic Porsche Design P'8478 are the world's first sunglasses with a lens replacement mechanism: the drop-shaped lenses can be easily swapped with spare lenses for different light conditions. Made with extremely lightweight titanium and polycarbonate lenses with a durable coating, these new Porsche Design 'exclusive sunglasses' impress with innovative design and maximum functionality. Includes spare green filters.