Bolle Performance Vigilante Sunglasses (Matte Black/Standard Polarized Set/TNS Gun) polarized Fit - Medium/Large UVA/UVB Protection - Bolle exceeds the industry standard with 100% 20.3 Poly carbonate Lenses - Sunglasses should protect you from more than just the sun. Rx S.O.S. Prescription Available With one simple snap, the patent-pending technology in our Rx adapter That's why our polycarbonate lenses are made from lightweight Premium-grade resin that's 20 times more impact resistant than glass-and three times lighter It lets you attach prescription lenses to your PAROLE, VIGILANTE, SWIFTKICK OR TRAVERSE sunglasses.