Bolle Parole Sunglasses Matte Black / T-Standard Lens Set A Sporty and streamlined frame that is truly all about performance The optics Control System, which allows for interchangeable lenses that can keep up with changing conditions Nose padding and Temple lining made with thermogrip technology, which provides a secure and comfortable fit A semi-rimless design that provides an unobstructed view The bolle label displayed on the lens and Temple 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. 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. Rx S.O.S. Prescription Available S.O.S RX Adapter - With one simple snap, the patent-pending technology in our Rx adapter lets you attach prescription lenses to your PAROLE, VIGILANTE, SWIFTKICK OR TRAVERSE sunglasses.