The AntiOx Champagne Stopper is designed by the Spanish brand Pulltex. This champagne stopper is perfect to have at home to effectively preserve champagne longer. It is designed with an active carbon filter that preserves the carbonic acid and prevents it from leaking out. Excellent when you only want to drink one or two glasses and then save the rest for another occasion. Pullex is well known in the wine world and a favorite of many sommeliers and wine lovers. With its patented technology, the champagne stopper is a well-made and reliable product. For best use, make sure to keep the carbon filter dry and that it is put on immediately after opening the bottle in a standing position. The champagne stopper has a handy swivel marker so you can easily set the date and know when the bottle was last opened. With this stopper, you can keep the carbonation in an opened bottle for up to 8 days.