From Maui Jim, the Unisex Crater Rim PolarizedPlus2® Square 52mm Sunglasses feature: Square shape Titanium semi-rimless frame Single bridge with adjustable, non-slip silicone nose pads Traditional hinge MauiBrilliant - Maui Jim's most advanced lens material that features optics nearly as clear as glass with just one-third of the weight PolarizedPlus2® lenses eliminate 99.9% of glare, block 100% of harmful UV and absorb harmful HEV Rx able Approx. 52mm eye - 20mm bridge - 145mm temple