The Vacu Vin Vacuum Wine Saver is one of the most popular wine accessories ever. It removes the air from opened bottles of wine and prevents oxidation. Place the re-usable stopper in the bottle and extract the air from the bottle. A "click" tells you when you have reached the optimum vacuum level. Simply re-seal the bottle with the rubber stopper. Open, reseal and enjoy your favorite bottles as often as you like.