Traditional elegance, flawlessly executed, the Marco delivers on all points: style, technology and comfort. This double bridge, 6-base frame is packed with SerengetiÕs signature photochromic technology and high-definition Spectral Control, with premium polarization options. All technology is embedded within the lightweight glass lens, delivering the best in optical clarity. The lenses are chemically tempered to ensure scratch and impact resistance. The exclusive S-Flex frame design rests securely and comfortably on your face.