Our Vacuum Pump Wine Stoppers are a effective way to keep your wine fresh no matter how many times the bottle is opened. To preserve your wines, the rubber one-way air valve can be inserted in the top of the bottle with the vacuum pumping cylinder provided to extract the air from within the bottle. This will delay the buffering cycle of the wine, thus preserving the taste of your wine. Constructed from food-grade ABS plastic and silicone, the stoppers are reusable after a simple hand wash, making them durable and eco-friendly. The silicone provides a tight seal around the top of the bottle to ensure the bottle is free from air, while also being completely spill-resistant. Can be used at home in the kitchen when entertaining guests, or for more commercial purposes to provide you a more e