From Maui Jim, these unisex sunglasses feature: Nylon frame Square shape 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 Rx able Gradient lens PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV and absorb harmful HEV Approx. 52mm lens - 17mm bridge - 145mm temple Imported.