A bottle stopper is a device used to seal the opening of a bottle, preventing the contents from spilling or becoming contaminated. Commonly made from materials like cork, plastic, or metal, bottle stoppers are essential for preserving the freshness of beverages such as wine, oil, and vinegar. They come in various shapes and sizes to fit different types of bottles. In addition to their practical use, bottle stoppers can also serve as decorative items. Some are designed with unique shapes or artistic elements, making them popular among collectors. Wine enthusiasts often seek out special stoppers to enhance their wine experience and maintain the quality of their favorite bottles.