The idea for the Vacuum Stoppers emanated directly from the taste of spoiled wine something that its inventors wanted to prevent once a bottle had been opened They were the first of their kind within the international market and have revolutionised the wine preservation process They are now used in over 35 million households and more than 80 countries throughout the world Features . Set of 6 Wine Saver Vacuum Stoppers made from high quality food approved rubber. Easy to insert after the cork has been removed from the bottle. Preserves wine via the creation of an airtight vacuum. Can be used with or without Vacu Vin s various award winning Wine Saver Pumps. Washable by hand or in a dishwasher and reusable. Suitable for all but sparkling wines Specifications . Color Pink Purple Blue. Weight 0 31 lbs