Stoppers are constructed from high-quality, food grade rubber that is dishwasher . Stored fresh, Vacuum stopper, Food grade, Durable, Taste Vacuum Stoppers are specially designed to be used alongside a Pump. The stoppers are universal for all bottles and are simply inserted into the neck of an opened bottle. Although they are most effective when used with a , they can also be used as a traditional stopper, keeping additional air out They are extremely durable and will provide years of use. The cap on the top of the stoppers can be removed in order to aid cleaning These stoppers allow for an airtight vacuum that preserves the flavor and taste of for up to a week! 1*6pcs Vacuum Stoppers Cute Stopper They Are Extremely Durable And Will Provide Years Of Use. The Cap On The Top Of The Stoppers Can Be Removed In Order To Aid Cleaning Stored Fresh, Vacuum Stopper, Food Grade, Durable, Taste 1*6pcs Vacuum Stoppers The Stoppers Are Universal For All Bottles And Are Simply Inserted Into The Neck Of An Opened Bottle. Although They Are Most Effective When Used With A , They Can Also Be Used As A Traditional Stopper, Keeping Additional Air Out These Stoppers Allow For An Airtight Vacuum That Preserves The Flavor And Taste Of For Up To A Week!