Revo Guide was designed to provide unparalleled performance features for the active water enthusiast. The tall frame and stem are designed to wrap around the face and block ambient light reflected off the water while providing maximum visibility, and made from the seed of the castor bean plant. 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. Includes a removable lens leash made from buoyant material and designed to keep the eyewear securely in place. Frame Style: Square. Lens Feature: Polarized Mirrored. Eye/Bridge/Temple: 66/18/122. Case or Microfiber pouch included.