Customize The Look Of Your Rev Up Eyewear And Get The Best Optical Performance For Where You Use It Most. All Replacement Lenses Feature The Unbeatable Clarity, Impact Resistance And 100% Uv Filtering Of Oakley’s High Definition Optics® (Hdo®).Specifications:- Light Transmission: 20%- Light Conditions: Medium Light- Contrast: IncreasedTechnologies:Prizm™ Lenses:- Oakley’S Exclusive Lens Technology Designed To Enhance Color And Contrast So You Can See More Detail.