Come and see our amazing products! Wine bottle vacuum stopper take extra air from your wine bottle, keeping the wine tasting fresh for 7 days after the bottle was opened.Suitable for all Red and White Wines. 1.Insert the wine stopper into the bottle mouth. 2.Pump the air out until you fell strong air resistance and the pumping rod rebounds around 1 minutes depends on the rest wine. Pls confirm further with us if any query about packing info, inventory status and time schedule.