In order to stop Champagne going flat, Champagne Fresh uses counter-pressure to prevent the escape of the carbonic dioxide. Only by using this method the opened bottle remains fresh for weeks. A cushion of carbon dioxide (heavier than air) prevents air contact. For industrial concerns the pressure can be taken out of a carbon dioxide bottle instead of the handpump. By pressing a button the bottle can be set under pressure again. The Champagne Fresh pack includes 1 pump, 1 rubber stopper and 1 metal clamp. Spare stoppers are also available to purchase.