just got a email about these today i guess they are exclusive to si pretty sick makes you wonder what else you could do with cerakote "Oakley is proud to partner with Cerakote™ in an effort to provide our customers with the most durable and mission critical eyewear protection possible. The two lenses are actually cut from a single shield of optically pure Plutonite® then placed in the frame to maintain the original continuous contour. An innovation of HIGH DEFINITION OPTICS®, POLARIC ELLIPSOID™ lens geometry extends clarity all the way to your peripheral view, exceeding ANSI Z87.1 optical standards. Impact protection meets all ANSI Z87.1 basic standards while UV filtering is an unbeatable 100% for every single ray of UVA, UVB and UVB. The lens curvature and frame architecture improve side protection, and durable yet lightweight O Matter® frame material."