We seared the optics of our proven M Frame® in an acid bath of design and performance. The extended Hammerfang™ earstems of this sculptural, hingeless frame are crafted for a secure fit. Four interchangeable lens shapes and a spectrum of tints let you hone adaptability to a molecule-fine point. The lightweight Plutonite® shield blocks all UV while POLARIC ELLIPSOID™ lens geometry protects you from the indignities of distortion. In the domain of athletics, generic accessory has now become vital equipment.