Oakley's Fast Jackets with Transitions Lenses automatically adapt to different lighting conditions so you can ride at your best. They also boast Oakley's Switchlock Technology that makes changing lenses as simple as flipping a switch. The frames utilize Oakley's lightweight O-Matter material and feature a semi-rimless design for an extensive field of view, while a unique suspension system cradles the lenses for distortion-free vision. Oakley's Plutonite lenses filter 100% of all UV rays, meet the highest impact protection standards and feature Oakley's flawless High Definition Optics for maximum visual clarity. Plus, the ear and nose pieces are made of Oakley's Unobtainium to keep your glasses exactly where you want them.