We extended the field of view in the upper peripheral region to optimize it for cycling, and once we added Switchlock™ Technology for easy lens changing plus temples that adjust to three different lengths for helmet compatibility, Jawbreaker™ became the ultimate sport design.Features:- Fast, secure lens replacement with Switchlock™ interchangeable lens technology- Lightweight O Matter™ frame material with ellipse metal icon accents- Unobtainium™ earsocks and nosepads for increased comfort and performance- Oakley performance shield lens technology with HDO™- Available with Prizm™ lenses to enhance color, contrast and detail for an optimized experience- Polarized and Iridium™ lens options available- Available with Oakley Authentic Prescription Lenses- Protective soft vault includedSpecifications: - Light Transmission: 20%- Light Conditions: Medium Light- Contrast: Increased- Information notice: 2- Fit: StandardTechnology: Prizm´:- Oakley´s exclusive lens technology designed to enhance color and contrast so you can see more detaiLImpact protection:- Oakley lenses designed and tested under extreme high mass and high velocity circumstances to ensure uncompromising protection across a wide range of demanding conditions.