Oakley Mainlink XL - Matte Brown Tortoise/Prizm Tungsten PolarizedOakley Mainlink XL Matte Brown Tortoise Prizm Tungsten Polarized The innovation behind a comfortably secure fit, Unobtainium is integrated into the classic styling of this OMatter frame inspired by Oakley Crosslink, blending sculpture with versatility that keeps up with active lifestyles. A matte brown tortoise frame and Prizm tungsten polarized lenses reduce glare and reveal detail with filtering benefits for easier ball tracking and location.