The original vacu vin wine saver was the first of many patented vacu vin inventions and the first of its kind on the market. vacu vin’ has revolutionized the wine preservation process. it is now used in over 35 million households and more than 80 countries throughout the world.the vacu vin wine saver extracts the air from an opened wine bottle and re-seals it using a rubber stopper. the airtight vacuum inhibits the oxidation process that is responsible for the deterioration of wine. the vacuum is created by placing a stopper into the neck of the opened bottle and pumping it until you hear the patented "click". the "click indicates" when a sufficient airtight environment has been established. simply pull stopper to break seal and remove, pour your favorite wine when ready to enjoy, reinsert stopper and remove air to seal again. reusable stoppers last for years.