From Maui Jim, the Mariana PolarizedPlus2® Fashion 55mm Sunglasses feature:  Round shape Acetate frame Saddle style bridge Spring hinge 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. 55mm eye - 18mm bridge - 140mm temple 6-base curve  Two-year warranty Imported.