Describe: The vacuum device prevents oxygen from coming into contact with the wine, slows down oxidation of the wine when the cork is opened and retains its original wine flavor for 7 days. The stopper is made of expanded rubber, fitting the lid of the wine. Ergonomic, ergonomic design. Size Information: Weight: 0.5 kg Size: 20 x 12.5 x 5.5 cm Use & Storage: Use: Specialized for preserving alcohol, slowing down oxidation of alcohol. Preservation: Use with dishwashers. Encourage product hygiene by hand. Do not use toilet products. Keep in dry places. Brand Information: Brand: ZWILLING. Material Stainless steel. Products are not warranted.