Smith Chief Bifocals Sunglasses 8 Base Lens Curvature Medium Fit/Med-Large Coverage Polarized Polycarbonate Lens Material Evolve Frame Material with Hydrophilic Megol Nose and Temple Pads, Stainless Steel Spring Hinges, Anti-Reflective and Hydroleophobic Lens Coatings Anti-reflective and Hydrophobic Lens Coatings