Optic Nerve Hermosa Sunglasses Plastic The smaller, tighter silhouette of the Hermosa loves the lady who appreciates rimless vision-enhancing performance in a sleek, organic style Sporting Optic Nerve's patented Fin Tech interchangeable lens system Shiny White Frame comes with easily interchangeable Grey or Copper lenses Optimum Uses: Extreme. Optimum Face Shape: Slightly Narrow 100% UVA & UVB protection