OAKLEY POLARIZED CRANKSHAFT SUNGLASSES Fusing our best-selling Gascan and Fuel Cell designs to crank evolution up a notch, Crankshaft? is how streetwise style makes a statement with its own design language. Frame: Durability and all-day comfort of lightweight, stress-resistant O Matter frame material Comfort and performance of Three-Point Fit that holds lenses in precise optical alignment Metal icon accents Frame suitable for medium to large faces Lenses: UV protection of Plutonite lens that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400nm Glare reduction and tuned light transmission of Iridium lens coating (optional) HDPolarized Minimized glare via technology that produces the best polarized lenses on the planet (optional) Dual lens polaric ellipsoid geometry (two lenses cut from a single toric shield) Impact protection based upon ANSI Z87.1 test methods for High Mass and High Velocity impact resistance Maximum clarity at all angles of vision with patented XYZ Optics