Sea Buff Specially formulated dive mask precleaner and slate cleaner. * Sea Buff is ideal for cleaning slates without harming or scratching. * Sea Drops Safe for all glass and plastic lenses-will not harm surrounding silicone or rubber support frames. * Proven, long lasting liquid formula, Concentrated, two-drop application * Non-abrasive?safe for all lenses and optics, performs well in extremely cold water, in non-toxic, biodegradable and alcohol-free formula