From Maui Jim, these men's sunglasses feature: Injected 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 Bi-Gradient lens PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV and absorb harmful HEV Approx. 57mm lens - 16mm bridge - 130mm temple Imported.