Bolle Performance Parole Sunglasses (Matte Black/Standard Polarized Set (Pol Sandstone + TNS Gun)) nylon frame polycarbonate lens polarized Lens width: 71mm Bridge: 10mm Arm: 130mm Fit - medium/large UVA/UVB protection - bolle exceeds the industry standard with 100 percent 20.3 poly carbonate lenses Rx S.O.S. prescription available With one simple snap, the patent-pending technology in our Rx adapter