WINE FLAVOR PRESERVER - This wine stopper will help create an airtight condition that preserves wine once the bottle is opened, will keep wine fresh and flavorful for a few days. SILICONE SEALANT - With a stainless steel core and premium TPE lid, these corks won't break easily like a plastic cork, so you can always have a chilled glass of wine. COMPATIBILITY - The corks suitable for most size bottle use, no matter wine bottle, drink or any other type, you can freely enjoy kinds of wines at the same time and don't worry about the wine going bad.< /p> EASY TO USE - Insert the thinner side of the bottle cap into the bottle and remove it with one pull, easy to use. EASY TO CLEAN - Compact and Dishwasher safe, these caps are easy to wash and store, which can be used for many years.