Oakley Double Down OX8188D 818804. 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. Eyeglasses Oakley Ox8188D Double Down, with a square frame in O_matter, offer a modern and decisive look. The black color completes the structured design, perfect for those looking for a strong definition in their style. Recommended for round and oval faces, since they add corners and definition to the softer features. Ideal for men.