Feature: 1. Keep Drink Fresh: The soda bottle lid could preserve the carbonation in the drink and keep your soda fresh for weeks. 2. Cap Design: The silicone ball is combined with the bottle cap, and the silicone ball is used to suck the beverage and retain the gas in the bottle. 3. Easy to Use: Cap the bottle on top of a bottle of soda, squeeze the top to "pump" the air out, open the lid and pour in, dishwasher safe. 4. Scope of Application: Suitable for most carbonated drinks on the market, please note that it cannot be used in glass bottles. 5. Material: Made of silicone material, safe, wear resistant, durable, will not react with the beverage, not easy to break. Specification: Item Type: Soda Bottle LidMaterial: SiliconeWeigth: Approx. 27g/0.95oz. Package List: 1 x Soda Bottle Lid