Material: champagne bottle stopper made of durable plastic or stainless steel that will not rust, crack or fade, safe and non-toxic wine bottle accessories. Design : the champagne bottle stopper double loop design buckles the bottle stopper securely on the bottle, and the high quality silicone parts fit the bottleneck exactly, preventing the loss of smell . Easy to use: when sealing, simply slide the wine bottle stopper into the top of your wine or champagne, simply open the top button when you open it again. After use, simply rinse with water and let dry, easy to clean and store. Instructions: Put the champagne cork on the bottle and press the two wings. As a result, the bottle is absolutely sealed and airtight. the escape of carbon dioxide is prevented.