Windspeed in silver is a classic pilot-inspired style. The first Revo metal style with a crystal lens, the double bridge metal frame with curved temples and rubber sock provide improved retention and a secure fit. Revo has engineered the water lens to eliminate glare and adjust for the natural blues and greens that are reflected in and around water, allowing you to see more naturally balanced colors. While some lenses address this problem by blocking the blue/green color range, the Revo water lens filters certain wavelengths only, for the most accurate colors without distortion. You get clarity, accuracy and amazing visual enhancement. Take the water lens fishing, boating or to any water-related activity.