Keep your wine fresh longer - Minimize wine oxidation by sucking the air out of the bottle. Just pump the vacuum wine stopper several times until it sucks itself tightly . This will help preserve your wine bottles flavor for weeks instead of just days. It preserves better than the original cork and prolongs the wine freshness. Pump the vacuum wine stopper several times until it sucks itself tightly to preserve wine for weeks instead of just days. Three-layer annular silicone stopper - Better sealing performance, keep non-sHrkling wine longer lasting. Strong and sturdy, will not cause harm to the human body. The stopper can completely cover the bottle mouth to prevent external contamination. No spills or leaks]- The vacuum rubber seal fits most wine bottles as well as others with similar characteristics. It preserves better than the original cork and prolongs the wine freshness. Safe & high quality - Great for a household, hotel, club, bar and more to use. Made from high quality and durable Food-Grade Silicone inside and food-grade ABS outside. A safe to human body, non- toxic, high-class wine accessory. Widely used- Fits most wine and chamHgne bottles. Just insert stopper into bottle, then press down several times, can remove air from and vacuum seal.