Its Durable yet Lightweight O-Matter® frame is Decked with Dual Cam Hinges in a Comfortable Three-Point Fit. You’ll have Enough Lens Real Estate to Keep the World in View. Carries True Metal Icons and the Precision of Hinges that Work with Dual Cam Action. Dual Lens Polaric Ellipsoid Geometry (Two Lenses Cut from Single Toric Shield) Oakley HDPolarized –Minimized Glare via Technology that Produces the Best Polarized Lenses on the Planet with greater than 99% Polarized Efficiency.