This black, all-in-one wine saver seals in your wine's robust flavor and delightful aroma even after the bottle is opened, making it ideal for restaurants, bars, or hotels that occasionally sell wine by the glass. The wine saver is reusable, allowing you to open and reseal the bottle multiple times. To release the vacuum, just push down on the top of the stopper. Never worry about losing additional parts or pieces again. This wine saver does not require a separate stopper or rubber cork because it is built in for straightforward operation. A wine-saver slows down the oxidation process, extending the life and flavor of your bottle of wine so that a bottle can be enjoyed over longer periods of time.