Double down confidently combines comfort and style, with features optimized for sport performance and a low-bridge fit. The round, ultra-lightweight nano-matter™ frame has fit-friendly trubridge™ sport unobtainium® nosepads and adjustable temples with unobtainium® earsocks for a personalized, no-slip grip. Order double down with oakley authentic prescription lenses – laser etched with the ellipse logo for proof of quality and authenticity.