Similar to your first snake feeding experience, the Oakley Jawbone SunglassesAAA un-hinging lens swap feature will blow your mind. Clouds making your day flatAAAjust pop open the Jawbone, replace the lens, and forget the hassle you used to go through just to change lenses. OakleyAAAs non-slipping Unobtanium frame stays put on your face, while the Hydrophobic Pltuonite lenses resist scratching and smudging. Included interchangeable nosepieces offer a customized fit and the High Definition Optics ensure crisp clear vision whether youAAAre sprinting for the finish line or just taking it easy on the side roads. Vents in the Jawbone"s lenses fend off fogging and increase airflow. Product FeaturesFrame: Hinge: steelLens: Plutonite (polycarbonate)Interchangeable Lens: yesLenses Included: Polarized: noFace Size: medium to largeFrame Measurements: Case Type: hardNose Pads: yes, interchangeableTemple Pads: yesRecommended Use: Cycling, running, hiking, mountain bikin, any sportManufacturer Warranty: lifetime