The KLOVEO Champagne Stoppers are designed with a patented seal that requires no pressure pump, ensuring your sparkling wine retains its fizz. Made in Italy, these professional-grade stoppers are perfect for Champagne, Prosecco, Cava, and other sparkling wines. The stopper uses Pascal's Law to create a bubble-tight seal, keeping CO2 in the liquid. It fits all standard 750ml bottle necks and is easy to use with a stainless steel safety clip. The stoppers are BPA and Phthalate free, ensuring safety and quality.