Based on the idea of the ultraviolet ray (U.V.) protectant used on airplanes, the Helmet Sunblocker? works effectively, is cheap to maintain and installs easily using only soap and water. Instead of looking through the Helmet Sunblocker? your eyes are below it, keeping it in your upper peripheral vision. Eye doctors have attested that it does work effectively and your own eyes will tell you that it?s doing what it?s supposed to be doing.