Costa Del Mar Diego Matte Midnight Blue/Grey Silver Mirrored -580G 62mm

100% UV PROTECTION: All Costa Del Mar Eyewear lenses block potentially harmful high-energy visible blue light rays and protect against 100% of Ultraviolet rays (up to 400nm). COSTA 580G GLASS LENSES: Costas patented 580G glass lenses provide scratch-proof clarity. 580 lenses go further then normal polarized lenses by blocking the perfect amount of harsh yellow light and potentially harmful blue light while enhancing beneficial reds, blues and greens. OPTIMAL USAGE: Costa's Grey Silver lenses help reduce glare and are anti-fatigue, perfect for everyday activities, and overcast days, especially off water. CO-INJECTED NYLON FRAMES: Costa's co-injected nylon frames are tough and durable, manufactured using the environmentally friendly bio-resin process. TR-90 nylon is a premier material for sports and performance frames as it is resistant to heat and cold.