• The standard internal diameter of 3 cm and the groove design on the inner wall keep your wine airtight and leak-proof, prolonging and preserving its fresh flavor. • Made with 100% food-grade silicone, latex-free and BPA-free, these stoppers are durable, unbreakable, reusable, and dishwasher safe. • Compatible with standard wine, beer, champagne, and soda bottles, allowing easy storage of bottles without fear of leaks. • Solid color design allows for customization and marking of bottles, preventing confusion. • The wine stopper set is an ideal gift for wine lovers, suitable for home use, travel, or outdoor activities. • Product dimensions: 3.8 cm wide, 2 cm high, and 12.7 cm long. Total weight: 0.05 kg.