Daylight Max provides UV protection for optimal performance in bright conditions; DiamondCoat is a hardened surface coating that reduces surface scratches; Protects against manufacturer's defects for the life of the product; Leupold's In-Fused polarized technology uses an advanced manufacturing process that fuses the polarization film between two of the lens layer; Guard-ion is a hydrophobic lens coating that sheds dirt and water for a maintenance-free, clear, crisp image; Compatible with prescription lens requirements. (Tracer style excluded)