The P'8478 sunglasses are the first frame to provide an easy, fast, interchangeable lens mechanism. With a quick release the teardrop-shaped lenses can be replaced to adjust various lighting conditions and styles. The frame is manufactured from high quality lightweight titanium. The lenses are made of scratch-resistant, unbreakable polycarbonate and offers top UV protection. A second pair of replacement lenses (different color) are included. To see the standard and replacement lens color, please choose frame color and size. Material titanium Glass grey (standard) flash gold (replacement)