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 included