We took all your favorite features of our best-selling style Holbrook™™, and crafted it into a lightweight sheet metal frame with advanced technology, taking this time-honored style one step further.Features:Unobtainium® interior stem pads increase grip without compromising on style,Three-Point Fit holds lenses in precise optical alignment while eliminating pressure points .INTEGRATED TECHNOLOGIESHigh Definition Optics®High Definition Optics® (HDO®) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance.