Holbrook Covert with Prizm lenses is a new version of a timeless classic. The large rectangular frame shape echoes the 1940's screen heroes. The frame is made with the lightweight O Matter material, but the lenses are what makes this model truly unique. Oakley Prizm Lens Technology lenses are designed to filter out specific points of the light spectrum that detract from contrast, and to reveal the light waves that offer additional contrast. Prizm lenses are color tuned for specific sports and environments to provide greater visual detail and sharper color contrast. It's a lens technology specifically engineered to correspond with different environments. Prizm goes beyond tinting. It fine-tunes your vision to the surrounding elements. It is an evolution of lens technology that allows you to see all the minute details of the terrain, to compete with confidence, and to react faster and with greater control.