Liquid containers are objects designed to hold liquids, such as water, juice, or oil. They come in various shapes and sizes, including bottles, jars, and tanks. Common materials used for these containers include glass, plastic, and metal, each offering different benefits like durability and weight. These containers often have features like lids or caps to prevent spills and keep the contents fresh. Some liquid containers are specifically designed for certain purposes, such as water bottles for hydration or fuel tanks for storing gasoline. Proper design ensures that they are safe and easy to use.