The P´8478 model was launched in 1978 as the world’s first sunglasses designed to include an interchangeable lens mechanism. The design’s quick release catch enables users to change their lenses at a moment’s notice according to the changing light conditions. Titanium frame in light gold. Lenses made of polycarbonate with 100 % UV protection, in brown. Includes a pair of interchangeable lenses in light blue/silver mirrored.