From Maui Jim, these Unisex Stone Shack 55mm Polarized Square Sunglasses feature: Unisex Acetate frame Square frame Saddle-style bridge Traditional pin hinge Medium-sized lens Square lens Lens Treatment: Blue Hawaii Lens  Material: SuperThin Glass Polarized Approx. 55mm lens - 19mm bridge - 144mm 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.