From Maui Jim, the Mariposa PolarizedPlus2® Fashion 56mm Sunglasses feature:  Oversized Butterfly shape Acetate and monel metal frame Saddle style bridge  Traditional hinges SuperThin Glass - provides the absolute crispest optics available. 20% to 32% thinner and lighter than standard glass, it offers the best scratch and solvent resistance. PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV and absorb harmful HEV Rx able Approx. 56mm eye - 20mm bridge - 145mm temple 4-base curve  Two-year warranty Imported.