This is a genuine Oakley piece called Flak Draft. A very light and versatile style created in 2017, with user interchangeable lenses. Each lens is released through a lever in the temple area. From Triathlon to Beach Walk and anything in between. Replacement lenses are available through Oakley direct or other after market companies. Name: Flak Draft Frame Color: Polished Black Lens Color: Gray SKU: OO9364-0167 Size: one fits all Condition: as new, never worn Packaging: Oakley Micro Bag only