Spex Polarized Grey Lenses are excellent for use on the water in bright sunny conditions. Excellent for the tropics or other areas where the sun is strong and most of your sport will be during the daytime. Polarized Grey Lenses are also excellent for those with sensitive eyes. Polarized Lenses eliminate reflective glare and all Spex Lenses offer 100% UV Protection. If you want a lens for more versatility, choose Polarized Amber, All Weather or Non-Polarized Clear for night or Very Low Light situations.