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;Award-winning product (used in over 35 million households and more than 80 countries throughout the world);Also available in grey