From Maui Jim, these sunglasses feature: Nylon frame Spring hinge Saddle-style fixed bridge with embedded non-slip silicone nose pads for added comfort SuperThin Glass - Provides the absolute crispest optics available. 20-32% thinner and lighter than standard glass, it offers the best scratch and solvent resistance. PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV, and absorb harmful HEV. Rx able 62mm eyes - 16mm bridge - 123mm temple - 8mm base curve Two year warranty Imported.