ANSI Z87-2+ is a ballistic rating that meets or exceeds ANSI high-velocity impact standards for eye protection using prescription lenses; Leupold's In-Fused polarized technology uses an advanced manufacturing process that fuses the polarization film between two of the lens layers; Each lens is custom designed and machined to fit within its frame so that the clearest part of the lens is directly in front of your eye; Made from ballistic-rated materials, all performance eyewear frames are ultralight, flexible, and maintain structure under stress; Guard-ion is a hydrophobic lens coating that sheds dirt and water for a maintenance-free, clear, crisp image; Daylight Max provides UV protection for optimal performance in bright conditions; DiamondCoat is a hardened surface coating that reduces surface scratches