WASING WS-LC-01 Vacuum Wine Bottle Stoppers (Set of 3) All-in-one Vacuum Stopper, No Separate Pump Required EASY & EFFCIENT EASIEST several 'PUMPS' with palm removes air from the wine bottle and creates an airtight vacuum that preserves wine for up to 30 days, prevents the oxidation process that is responsible for the deterioration of wine. ALL-IN-ONE VACUUM wine bottle stopper. Creates an airtight vacuum without a separate pump! PUMP THE STOP BUTTON 6-8 TIMES. When the button stays in the down position, an airtight vacuum has been established. SCREW STOPS AND SPARKLING WINE not included on most wine bottle. 30 DAYS MONEY BACK guarantee. Add to cart for much better easier wine saving! SET OF 3 UNIQUE.