The VinoVac Wine Saver System is a vacuum pump, which extracts the air from the opened bottle and re-seals it with a re-usable rubber stopper. Place the re-usable stoppers of the VinoVac Wine Saver System in the bottle and extract the air from the bottle using the Wine Saver pump. The vacuum slows down the oxidation process so that you can enjoy your wine for longer. The question "how often do I have to pump?" is a thing of the past. VinoVac Wine Saver System includes 1 Wine Saver Vacuum Pump, 2 reusable rubber stoppers and a 1-year warranty. Stoppers are hand washsable.