Works Great to Clean that New or Water Spotted Mask.nCleans slates without harming or scratchingnPowerful, long lasting formula provides fog-free protectionnWill not harm surrounding silicone or rubber support framesnNon-toxic, biodegradable and alcohol-freenThis Special Two Pack Includes one 1 oz. bottle of Sea Buff Mask Cleaner and one 1 oz. Bottle of Sea Gold Mask Defog. Its the perfect gift for every Diver or Snorkeler. Specially formulated dive mask precleaner and slate cleaner. Sea Buff carefully removes residue left on new dive mask lenses by the manufacturing process and prepares the surface for the first application of Sea Drops or Sea Gold anti-fog formulas. Sea Buff also removes other residue accumulated on masks while diving or during storage. Sea Buff is ideal for cleaning slates without harming or scratching. Sea Gold by M EssentialsTM is a powerful formula that lasts longer than other anti-fog treatments. It's highly concentrated, so a little goes a long way. And it's even effective through multiple dives. Sea Gold is easy to throw in your pocket, or attach to your gear with the Sea LeashTM adjustable gear attachment. Use in any water temperature and in any conditions. It's safe for glass and plastic lenses, and won't harm silicone or rubber mask frames. Avid scuba divers, instructors and professional gear testers alike agree: Sea Gold is the best anti-fog treatment out there. Use Sea Gold and you'll enjoy diving as it was meant to be: completely fog-free.