Feature:1. Keep Freshness: This vaccum wine stopper slows down the oxidation process to keep the wine freshness up to one week.2. Durable Material: This vaccum wine stopper is made from food grade silicone and plastic material, which is safe, reusable and durable.3. Widely Used: This vaccum wine stopper is widely used in most cork or screw top bottles. Suitable for oil, beer, champagne to mineral water.4. 4 Pieces: You will receive 4 pieces of this vaccum wine stopper that could meet your different needs, suitable for different occasion.5. Ideal Gift: This vaccum wine stopper with unique design is an ideal and perfect gift for your friends and family.Specification:Item Type: Vacuum Wine StopperMaterial: Silicone, PlasticColor: BlackQuantity: 4 PcsProduct Size: Approx. 8.5 x 2.5 x 1.7cm / 3.35 x 0.98 x 0.67in ( Manual Measurement, Slight Error May Exist )Stretching Part Length: Approx. 4.1cm / 1.61in ( Manual Measurement, Slight Error May Exist )Weight: Approx. 101g / 3.56oz.Package List:4 xVacuum Wine Stopper