PORSCHE DESIGN Titanium Aviator P8478 V Eyewear Blue Silver SUNGLASSES Shades. The iconic Porsche Design P´8478 sunglasses were the first in the world to have an interchangeable lens system. The teardrop base 6 curved lenses in the sunglasses can be easily changed with a quick-lock system that you turn to unlock and then replace with another interchangeable lens for different light conditions.
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