2pcs Red Wine Vacuum Bottle Stopper Sealing Stopper Household Fresh-keeping Stopper size8.5*2.5cmapprox abs press vacuum stopper, food grade silicone. Seven-day long-lasting freshness, built-in vacuum valve, truly drip-proof, seven-day freshness. Note: The reason why it can only be insured for 7 days is because it can only take away the air in the bottle, but there will still be a small part of the air that was originally incorporated into the wine, and it will continue to slowly oxidize with the red wine. Therefore, 7 days is the best period for keeping fresh with vacuum plugs. Name: wine vacuum stopper Material: ABS (transparent part) + food grade silicone This product is all made of food-grade silicone material, which can be used repeatedly as a bottle stopper. Take away the remaining air in the wine bottle to make it close to a vacuum, so that there is no drink after opening The finished red wine has a fresh-keeping period of more than 7 days, thereby extending the storage time of the red wine after it is opened. Instructions 1. Close the bottle mouth with a vacuum bottle stopper, and then pull the suction lever of the bottle stopper to draw out the air in the wine bottle. Repeat the pumping several times until the pull rod has a certain suction pull. 3. Before removing the cork, please shake the cork left and right to balance the air pressure inside and outside the bottle, and then pull out the cork.