Description If you re drawn to the dramatic the Era comes through with an exaggerated cat-eye shape. Despite the large coverage these Smith sunglasses feel lighter than they look. The bio-based frames come with no-slip nose pads. Available with your choice of standard Carbonic lenses or ChromaPop? polarized lenses that reduce glare and enhance color. Product Details Vision ChromaPop? polarized lenses cut glare and enhance color and contrast Carbonic lenses offer impact resistance and clear optics Fit / Integration Medium fit large coverage 4-base lens curvature is just right for everyday wear Megol nose pads provide non-slip grip so glasses stay put Frame Evolve? bio-based frame material is lightweight and durable