Spex Polarized Gold Lenses are excellent for use on the water in lower light and variable lighting conditions, such as early mornings, late afternoons or mid day cloud cover. The Polarized Gold Lens tint takes blue out of the color spectrum - which really brightens things up on a cloudy day. Blue is the most prevalent color in the light spectrum and Gold really enhances your vision. Polarized Lenses also eliminate reflective glare and are ideal for water sports. Choose Gold for more the most contrast in low light conditions.