Save TasteThis wine stopper has good airtightness to preserve wine. This wine stopper is suitable for most types of wine bottles, can prevent the loss of taste and maintain freshness.Lockable This Wine stopper uses a Twist Lock Design. Just twist the upper part of the wine stopper to the locked position to completely lock the Wine stopper on the bottle neck.High Compatibility This Wine stopper can be compatible with standard wine bottles with an inner diameter 18mm to 19mm (0.708 inches to 0.748 inches).Leakproof The inner plug is made of food-grade silicone that closely fit the bottleneck. Therefore, this wine stopper has a good leak-proof performance.100% Guarantee If you encounter problems when you receive the wine stopper or use the wine stopper, please feel free to contact us to obtain a solution that satisfies you.