Silicone material: Made of silicone, these stoppers are durable and resistant to breakage and deformation. They are flexible, long-lasting, and help prevent leaks. Bottle sealing: These stoppers are a practical tool for wine and beer lovers. Simply pull the stopper over the bottle to seal it. You don't have to drink all your wine at once, which extends its shelf life. Easy to install and remove: These lightweight and portable silicone stoppers fit various types of bottles. They are easy to install and remove without strenuous pushing or pulling, saving you time and effort, and are easy to clean. Large quantity and vibrant colors: You will receive stoppers in 8 different colors, including red, pink, green, blue, rose, grape red, purple, and yellow. The large quantity and vibrant colors meet your daily wine preservation needs. Widely compatible with various bottles: These stoppers can be used on various beverage bottles, such as beer, wine, champagne, soda, etc. Perfect for parties and dinners.