Still savouring the sparkle of your celebration? Extend the magic with the Monsieur Champagne Stopper! This airtight stopper is designed to keep your champagne or sparkling wine fresh for up to 24 hours, ensuring that every sip is as effervescent as the first. Crafted to fit bottles with an internal neck diameter of 17.5 to 18 mm, it offers a secure seal that locks in freshness.