Oakley Si Ballistic M-frame 2.0 Array - Black Frame with Grey and Clear Lenses Built with high-mass and high-velocity impact in mind Comes with a 3-point fit that comfortably accommodates most head sizes Ellipsoid lens shape eliminates distortion in harsh sunlight Hydrophilic silicone earsocks and nosepieces won't slip when wet Equipped with shatterproof, scratch-resistant polycarbonate lenses