1. Good quality - Made of environmentally friendly, food grade silicone. Reusable The bottle is hermetically sealed with the reusable, dishwasher-safe closure. The closure set is particularly suitable at parties. The bottle, no matter if it is juice, soft drink or a beer, is turned off and no one knows who the drink belongs to. 8 Red + Yellow + Blue + Green + Brown + Black + Gold + Silver Different colors make it easier.2. Airtight seal - Airtight and leakproof seal, a fantastic work seal in freshness and odor-inhibiting. Silicone wine bottle closures that create an airtight vacuum seal and we're freezer and dishwasher safe!3. Easy to use - To seal your wine on a daily basis. Durable and dishwasher safe, easy to clean.4. Application - Suitable for wine, beer, champagne and soda water bottles, even some larger sizes.5. Package - 8 pieces (different colors) bottle caps. Perfect for outdoor activities, hiking, camping, picnic ect.