TheOakley Flak Draft Road Sunglasses features asingle release trigger which helps make lens changing quick and easy, and with features like integrated ventilation that fights fog buildup, this premium multi-sport sunglass is the new definition of performance.Oakley Flak Draft Road Sunglasses FeaturesSingle release trigger for rapid lens exchange & integrated frame ventilation for anti-fogSemi-rimless architecture extends coverage to help protect your eyes while giving you an expanded field of viewUnobtainium® earsocks and nosepads increase grip with perspiration for a no slip gripProtective sports-specific Oakley Soft Vault includedPlutonite® Lenses offer top UV Protection filtering 100% of all UVA, UVB, UVC and harmful blue light up to 400nmO Matter™ stress-resistant frame material is both lightweight and durable for all-day comfort and protection