1. [Material]: The silicone crown caps are made of BPA-free, food-safe silicone, especially for food. The lids are absolutely food-safe, colourfast and odorless. 2. [Excellent sealing function] Bottle cap design that can close tightly to keep wine and beer fresh and keep the taste for weeks. The silicone stopper is suitable for many types of bottle openings, sauce bottles, wine bottles, beverage bottles, etc., can be tightly closed to keep wine and beer fresh and to keep the taste for weeks. 3. [Keep fresh]: The silicone crown caps keep your drinks fresh for a long time and protect them from the loss of carbon dioxide. Air-tight hygienic closure keeps your drink fresh and insects stay outside. This keeps the drink fresh and tasty for longer. 4. [Flat marking]: 12pcs silicone bottle caps 6 colors, (2 x red, 2 x orange, 2 x blue, 2 x green, 2 x yellow, 2 x pink). 24pcs silicone bottle cap 6 colors, (4 x red, 4 x orange, 4 x blue, 4 x green, 4 x yellow, 4 x pink). The bright colors can distinguish the different bottles so that there is no confusion. 5. [Reusable]: The silicone crown caps are easy to clean and are suitable for many types of bottles such as mineral water, wine, sparkling wine, soda, cola and other drinks. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.