The Tombstone is a breakthrough in competitive shooting eyewear, combining superior clarity, enhanced protection, and simple lens changes in a sleek and comfortable package. Using eye-tracking technology, Oakley identified the key zones in your field of view to allow for 120 degrees of vision. They also incorporated Prizm technology to provide enhanced contrast to help lock in your target and decrease eye fatigue/eye strain. Finally, Oakley integrated a single release trigger for rapid, fingerprint-free lens exchange. The result is the most advanced Shooting Eyeshield on the market, delivering unprecedented performance for the modern-day marksman. Prizm Clear lenses for enhanced color, contrast and detail High-grade, scratch-resistant Plutonite polycarbonate lens material Filters 100% UVA/B/C and harmful blue light Impact-tested under extreme high mass and high velocity Enhanced 120 degrees field of view Simple, fingerprint-free lens interchangeability Lightweight O Matter frame with thin earstems Unobtainium material keeps them from sliding off your face Order today!