Describe: Vacu Vin brand's vacuum stopper sets the stopper on the bottle after opening, slowing down the oxidation of alcohol in the bottle. Button set specialized for vacuum unit of the brand Vacu Vin. Fits most wine bottles. Use & Storage Use: Close the bottle tightly after opening the bottle, slowing down the oxidation of the wine in the bottle. Preservation: Keep in dry places. Clean the product with clean water. Brand Information Brand: Vacu Vin. Material: silicone. Products are not warranted.