Wine stoppers are devices used to seal open bottles of wine, helping to preserve the wine's flavor and aroma. They come in various materials, including cork, silicone, and metal, and are designed to fit snugly in the bottle's neck. By preventing air from entering, wine stoppers can slow down the oxidation process, which can spoil the wine over time. Some wine stoppers are simple and functional, while others are decorative and can enhance the presentation of a wine bottle. Many wine enthusiasts use stoppers to keep unfinished bottles fresh for several days or even weeks, making them a practical accessory for anyone who enjoys wine.