Oakley Square Wire 2.0 Spring Hinge Platinum : Gold Iridium 05-6 A Metal blend that defies both gravity and abuse, Square Wire® 2.0 Spring Hinge is decked with refined bridgework and mounted with spring hinges. All Square Wire® 2.0 Spring Hinge frames are held comfortably in place by the stable tension of a spring hinge mechanisms. Available Iridium® lens coatings tune contrast for any light condition while patented XYZ Optics® maximizes peripheral clarity. Buy this item from Noblelook for £150.37