Engineered to provide superior protection from projectiles, Oakley's SI Drop Point Sunglasses feature 8.75 base curvature lenses that resist impact up to ANSI Z87.1 standards. Prizm Polarized lenses increase color and contrast, while HDPolarized technology and Iridium coating significantly reduce glare. Stress resistant O Matter frames are designed with Oakley's exclusive Three-Point Fit that provides you with the precise optical alignment you need to get the job done.