From Maui Jim, these Women's Mehana 55mm Round Sunglasses feature: Acetate frame Round shape Saddle bridge  Traditional pin hinge Gender: Female Sizing: Medium  Round lens  Blue Hawaii mirror lens SuperThin glass lens  Rx able Polarized Approx. 55mm lens - 20mm bridge - 145mm temple SuperThin Glass provides the absolute crispest optics available. 32% thinner and lighter than standard glass, it offers the best scratch resistance PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV, and absorb harmful HEV, while enhancing colors Imported.