oakley sports sunglasses with a lightweight frame and prizmâ„¢ lenses. oakleyâ„¢ sutro revolutionizes the look of traditional sports eyewear.inspired by the everyday life of urban cyclists, the close-fitting lens creates a distinctive and versatile look and protects you in wind and weather. the prizmâ„¢ lens technology provides improved vision and thus ensures that you, as an active athlete, are fully motivated and safe throughout the day.oakley prizmâ„¢ lensesprizmâ„¢ is the revolution in lens optics. by fine-tuning individual waves of colour, prizmâ„¢ sharpens visual acuity to reveal nuances that would escape the naked eye. with ordinary sunglass lenses, the environment appears dull and flat. prizm lens technology makes everything look alive and vibrant.prizm sapphire lensthis lens is used on sunny days and increases contrast.transmittance of visible light: 12 %