Continuing the tradition of working with the world’s top cyclists to develop some of the best performance eyewear on the planet, Oakley created their RadarLock. Oakley’s lightweight, durable O Matter frames deliver uninhibited vision and refreshing airflow. And, since light conditions change throughout the day, the photochromic lens has you covered by adjusting to varying light conditions. Additional lenses (sold separately) are easier than ever to swap out with Oakley's innovative Switchlock technology. The Plutonite lens material with High Definition Optics offer distortion-free viewing while filtering 100% of all UV rays and meeting the highest impact standards. Plus, Oakley’s Unobtainium ear and nose pieces increase grip when wet, so your glasses stay exactly where you want them, even on the hardest efforts.