Bottle shape refers to the physical form and design of a bottle, which can vary widely based on its intended use. Common shapes include cylindrical, square, and oval, each serving different purposes. For example, a wine bottle typically has a long neck and a wider base, while a water bottle is often more streamlined for easy handling. The shape of a bottle can also influence its functionality and aesthetics. A unique bottle shape can enhance branding and attract consumers, as seen with craft beer bottles that often feature distinctive designs. Additionally, the shape can affect how the contents are poured or stored.