Premium MaterialSilicone caps are made of BPA-free silicone, washable, non-fading and odorless, non-deformable, reusable, flexible and lightweight, easy to cover and remove. Good sealingThe bottle cap provides an airtight seal, which is leak-proof on your wine bottle. These wine stoppers are designed to keep your wine fresh for weeks. Soft and flexible to help seal leaks. The silicone cap keeps air, dust and insects out of the cup, even if the bottle is tilted, it won't spill liquid. Six ColorsBright colors are a creative way to label your wine bottles, so there is no confusion, each bottle has its own color. The reusable drink cup lids are perfect for parties and home use, and the different colors clearly differentiate the bottles you use. Easy to CleanOur sustainable silicone bottle cap set is dishwasher safe and machine washable upside down! Or simply clean silicone wine corks with washing up liquid and hot water. Scope of ApplicationSilicone beer mats are dimensionally stable and suitable for most types of standard bottles, such as beer, mineral water, wine, soda, cola and other beverages. Suitable for various places such as home, bar, party, outdoor camping area, etc.