The JOIE Bottle Stopper was selected due to its completely airtight and leak-proof seal. The freshness of your wine will be prolonged and preserved when using the Joie Stopper – especially when combined with ARGON GAS BOTTLE. This stopper is attractively designed and will seal wine, beer, champagne, vinegar, oil, mineral water, and more. It’s made from plastic and the seal is made from durable rubber. Hand washing is recommended to extend the life of the bottle stopper. Stoppers are offered in several colors and is easy to use – just insert the stopper into the bottle and press the lever to seal the bottle airtight. Sold in sets of 2.