oakley sports glasses with lightweight frame and prizmâ„¢ lenses. oakleyâ„¢ sutro revolutionises the look of traditional sports sunglasses.inspired by the everyday life of urban cyclists, the close-fitting sunglasses create a distinctive and versatile look and protect against wind and weather. the prizmâ„¢ lens technology ensures improved vision and, thus, ensures that active athletes get through the day fully motivated and safely.prizmâ„¢ lensesprizmâ„¢ is a revolution in lens optics built on decades of colour science research. prizmâ„¢ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximise contrast and improve visibility.light transmission: 14 %light conditions: sunny to slightly cloudy