Frameless design with two SIGMA™ lenses. The Sentry Prime offers a frameless design and exceptional optical quality. Whether filming new tricks or carving epic lines through the powder, the SIGMA™ lenses ensure clear vision in various weather conditions. Thanks to Salomon's unique frame construction and Custom ID Fit technology, the goggles instantly adapt to the shape of your face.SIGMA™ Gun Metal LensThe SIGMA™ lens enhances colour contrast, allowing you to see terrain details in all light conditions quickly.Light Transmission 12 %