Beer bottles are containers specifically designed to hold beer, typically made from glass or plastic. They come in various shapes and sizes, with the most common being the standard 12-ounce bottle. Glass bottles are often dark-colored to protect the beer from light, which can affect its flavor. The design of beer bottles includes a neck and a mouth, where a cap or cork seals the contents. Many breweries use unique labels and branding to distinguish their products. Beer bottles can be recycled, making them an environmentally friendly option for packaging beverages.