Smith Optics Lowdown XL 58 mm Sunglasses Made in USA Evolve frame Carbonic TLT lens non-polarized Lens width: 58 millimeters Lens height: 47 millimeters Bridge: 17 millimeters Arm: 135 millimeters Auto-lock hinges 6 base lens curvature Hydrophilic megol nose pads Medium-large fit / coverage Carbonic TLT lenses