Preservino patented stopper is the first “champagne saver” that truly gets it! Champagne is more than bubbles! We drink fine sparkling wines for the delicate flavors and aromas that define them. If all we cared about was bubbles, we’d buy Cold Duck! The new Preservino Champagne uses 100% argon gas to preserve the flavors and aromas of your fine Champagne, and yes…………the patented design also keeps those tiny bubbles in perfect shape!