Material: stainless steel 1. STAY FRESH: Champagne corks are made of high quality silicone seals that provide a better airtight seal to extend and preserve your opened champagne bottles. Champagne stays fresh for days and remains leak-proof even in the fridgedown. 2. EASY TO USE: You just insert the champagne cork into the bottle and fold down the hinged cap to lock the lower lip of the sparkling wine bottle. ; The cap on the champagne bottle presses the wings, making it airtight and preventing carbon dioxide from escaping. 3. HIGHLY DURABLE: The reusable champagne corks prevent champagne leaks and give you a clean and tidy environment. 4. Versatile Uses: Champagne corks are suitable for sparkling wine, but also for holiday parties, weddings, birthdays, etc. 5.Material: stainless steel; matte plastic for all champagne, prosecco or champagne bottles including