Precise cutting guarantees 100% fit for Oakley Flight Jacket (not Flak Jacket) sunglasses Special process design 100% polarized - reduces glare, enhances contrast, and clears the field of view 100% protection against harmful UVA/UVB/UVC rays - making your eyes easier and more comfortable Impact resistant - exceeds ANSI Z80.3 and EN 1836:2005 standards Anti-fracture & scratch-resistant hard coating - make the life of the lens 3 times higher than that of ordinary lenses