Z Clear Anti Fog is a family owned business that originated in the 1960's. Starting out being sold in grocery stores as a jewelry cleaner that has transformed into an anti fog lens cleaner passed down from one generation to another. Z Clear was introduced into the market because any activity that requires a lens has the potential for fog. We all know fog is not only an annoyance but also can be a life threatening issue. We stand strongly by our products and the fact that it is the best anti-fog lens cleaner you can use that is on the market.