From Maui Jim, these unisex sunglasses feature:  Square Shape Acetate & Stainless Steel Frame Double Bridge Traditional Pin Hinge 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. PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV and absorb harmful HEV.  Rx able Eye/Bridge/Temple approx. 49/22/145, 4-base curve Two year warranty Imported.