The starter bundle comes with a ZOS Halo wine saver and five cartridges.
ZOS is a wine stopper that absorbs oxygen. When your wine is exposed to oxygen, the delicate flavors and aromas are damaged. By simply inserting the ZOS stopper into your open bottle, it’s oxygen-absorbing cartridge automatically removes 100% of the oxygen that damages wine. So the last glass will taste just as good as the first.