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The Maui Jim Akoni has a sturdy wire frame in a style that looks great on men or women. The glass lenses feature Maui Jim's patented PolarizedPlus2 technology, block 100%UV (ABC,) and are simply a joy to look through. The frame is made of Monel metal with spring hinges for great durability. The nose pads and temple tips are adjustable for a custom fit.Click Here for more InformationGeneral appeal: UnisexIdeal fit for oblong, square, heart, and diamond face shapesLens material: PolarizedPlus2, SuperThin(ST) Glass LensSpring hinges: Yes.