Flavin Wine Stopper and Preservation System/ Use Both As a Stopper and a Preserver/ It Will Save the Flavor of the Wine up to 30 Days!!!!! Perfect Gift!!!! Great Gift Set!!!! Removes over 99% of residual oxyen within 8 hours It Minimizes any negative effects during storage by completely sealing a bottle of wine There is no change in pressure inside of the wine bottle when the Flavin Wine Preservation is in use and can be used to preserve the flavors of up to 1 month!!!! It is a wine stopper of new concept using high performance oxygen absorbers, which are good for long term storage without any negative effects by quickly removing residual oxygen inside the wine bottle As the stopper is able to be recycled, you need to buy only the oxygen absorbers