Oakley Flak Jacket XLJ Sunglasses w/ Interchangeable Lenses 11-004-63 - Matte Black Frame Grey Lenses. The frame offers O Matter and Unobtanium components for a comfortably secure fit and pure Plutonite lenses to filter out 100percent of all UV rays. Specifications for Oakley SI Flak Jacket XLJ Sunglasses w/ Interchangeable Lenses: Manufacturer: Oakley SI Temple Length: 135 mm Age Group: Adults Gender: Male Frame Color: Matte Black Lens Color: Grey Photochromic: No Lens Diameter: 63 mm Polarized: No Lens Material: Plastic Distance Between Lenses: 14 mm Frame Type: Regular Fit Horizontal Frame Measurement: 63 mm Vertical Frame Measurement: 39.1 mm Lens Shape: Irregular Condition: New RX-Able: Yes Advanced Temple Material: Plastic Base Curve: Base 875Base 8 Horizontal Lens Measurement A: 63 mm Vertical Lens Measurement B: 37 mm Effective Lens Diameter ED: 66 mm Bridge Design: Standard DBL Size: 14 Front Material: Plastic Lens Properties: Standard Features of Oakley SI Flak Jacket XLJ Sunglasses w/ Interchangeable Lenses Lightweight O Matter frame material with ellipse metal icon accents Unobtainium earsocks and nosepads for increased comfort and performance 8.75 base lens geometry with HDO Polarized Iridium and Photochromic lens options available Interchangeable lens system Available with Oakley Authentic Prescription Lenses Protective soft vault included Package Contents: Oakley SI Flak Jacket XLJ Sunglasses w/ Interchangeable Lenses Oakley Flak Jacket XLJ is also available in the following versions: Oakley Flak Jacket XLJ Replacement Lenses Oakley OO9009-11-004-63 Flak Jacket Xlj Glasses - Mens - Sunglasses: Matte Black Frame 63mm Grey Lens