The Champ champagne stopper by Adhoc is stylish and effortlessly seals any champagne bottle, sparkling wine bottle, or cava bottle. It keeps the contents of the bottle airtight and preserved for several days. Place the silicone stopper over the opening of the bottle and fold the stainless steel ends tightly around the bottle. The silicone stopper seals the bottle airtight. BPA-free and dishwasher-safe.