The Maui Jim Kahuna has a sturdy wire frame in a style that looks great on larger faces. 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 Information General appeal: Unisex Ideal fit for oblong, round, and oval face shapes Lens material: Polarized glass Spring hinges: Yes.