Model: 0OO9363 Flak™ Beta. An addition to our Flak® collection, this interchangeable lens design offers benefits from performance eyewear, delivering unrivaled innovation to those who want to see the difference technology makes in a full range of activities. Features: Durability and all-day comfort of lightweight, stress-resistant O Matter™ frame material. Unobtainium® nosepads increase grip with perspiration for a no slip grip. Three-Point Fit: Comfort and performance that holds lenses in precise optical alignment. Metal Icon Accents. Asia Fit version available. Available with Prizm™ lenses to enhance color, contrast and detail for an optimized experience. Optimized peripheral vision and side protection of 8.75 base lens curvature. Glare reduction and tuned light transmission of Iridium® lens coating (optional). Optical precision and performance that meets ANSI Z87.1 standards. Maximum clarity at all angles of vision with patented XYZ Optics®. UV protection of Plutonite® lens material that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400 nm. Available with Authentic Oakley Prescription Inserts.