The Oakley Standard Issue Flak® 2.0 XL is a must-have for any active lifestyle. With its matte black frame color and rectangle shape, these shades exude style while offering maximum protection from the elements. Equipped with patented High Definition Optics (HDO) technology for unparalleled clarity, these sunglasses also feature o matter frame material for improved durability and comfort. Complete with an adjustable wire core system that allows you to easily change your look, these shades offer both style and functionality in one convenient package—from clear to black iridium photochromic lens color options.