The Ops Drops are an anti-fog and lens cleaner used by the US Armed Forces typically in more dry environments. It can be used with any goggle, glass lens or plastic lens, headgear visors, face shields, night vision goggles, binoculars, chemical and gas masks, scopes, dive masks, and sunglasses. Recommended for use with Oxygen, Factory Driver, and Flip-Up Factory Driver lenses. We have found it to be very effective on the Sorz, Kroops, Sky Eyes, and Ultimate Sports goggles. New goggles with a treated anti-fog lens tent to show little or no anti-fog difference with the Ops Drops applied. The Ops Drops come with a soft lens cleaning cloth that will help clean your goggle or lens without scratching. Will not harm surrounding silicone or rubber support frames. Not recommended for swim goggles.