Set of 2 "Smart Cap" stoppers - Champagne conservation Bubbl system.

The “Smart Cap” cap is a French patent.  
It perfectly closes your bottle of sparkling wine during and after serving.  
The cap incorporates a valve which regulates the pressure to manage a pressure of 3 bars maximum.  
It also incorporates a degassing valve for the evacuation of the oxygen contained in the bottle during the injection of the protective gas and thus avoids oxidation.
It is perfectly waterproof, for transporting your bottles during your agent tours.  
Ultimately, the Smart Cap is ideal for allowing you to open, serve and then store as many bottles of sparkling wine as you wish.