From Maui Jim, these Equator PolarizedPlus2® Wrap 64.5mm Sunglasses feature:  Wrap, rectangle shape Nylon frame Saddle-style bridge  Embedded, glue-on, rubber nose pad  Spring hinge  Rectangle lens  SuperThin Glass: SuperThin Glass provides the absolute crispest optics available. 32% thinner and lighter than standard glass, it offers the best scratch resistance. Bi-gradient mirror lens treatment  Polarized Rx able Approx. 64.5mm eye - 17mm bridge - 135mm temple - 8mm plano curvature Imported.