The Vacuum Wine Stoppers are used in combination with the Vacuum Wine Saver The Wine Saver is a vacuum pump which extracts the air from an opened ottle and re seals it with the reusable rubber Vacuum Wine Stopper Place the reusable stopper in the bottle and extract the air from the bottle using the Wine Saver pump The vacuum slows down the oxidation process which makes it possible to enjoy your wine again on a later date Features . 2 additional Stoppers for the Vacu Vin pump. These seals must only be used in conjunction with this device. Hand wash and dry only. Pack of 2 Specifications . Weight 0 11 lbs