Look into the future when you wear these unbreakable Porsche P8978 B men's sunglasses with interchangeable lenses. The Aviator frame is made in lightweight silver Titanium with a distinctive double bridge. The slender silver Titanium arms feature the Porsche Design logo at the temple and are tipped with black acetate at the ends. These 2-in-1 sunglasses come with two pairs of interchangeable lenses for different wearing conditions, a pair of grey gradient silver mirror lenses and a pair of green lenses. The lenses are all made with unbreakable and scratch-resistant polycarbonate and provide 100% UV protection. These authentic designer sunglasses measure 69-10-135 mm and ship with the Porsche lens case and lens cleaning cloth. Made in Japan.