Featuring Switchlock™ interchangeable lens technology, the Oakley Fast Jacket XL Non-Polarized Sunglasses deliver adapt-and-conquer performance for a wide range of environments and outdoor sports. And Fast Jacket open-edge lens design won't obscure your view when looking downward. The Oakley cushioned lens suspension system eliminates vision-distorting lens stress for dependable interchangeable lens security and optimal clarity. High-strength, metal-injection-molded stainless steel Switchlock push-button mechanism for fast, easy lens changes. High Definition Optics® with patented XYZ Optics® technology offer clarity at every angle and vibrant, high-contrast images. Ultrapure Plutonite® lens material filters out 100% of UVA, UVB, UVC and harmful blue light. Lightweight, stress-resistant O Matter® frames maximize comfort with a three-point fit that eliminates pressure points. Unobtainium® ear-stem sleeves provide increased grip when you perspire. Includes two interchangeable Oakley HDO lenses for high-contrast performance on bright, sunny days and increased acuity in low-light conditions. Lens-impact protection meets ANSI Z87.1 standards. Also includes two sizes of interchangeable nose pads, an Oakley Soft Vault case and the Oakley Nano-Clear Hydrophobic Mini-Pen.