A double mug typically features a dual-chamber design, allowing users to pour two different types of beverages into a single vessel. For instance, one side of the mug could hold strong black coffee, while the other side is filled with creamy hot chocolate or a refreshing herbal tea. Some designs even come equipped with a divider, ensuring that the flavors do not mix, preserving the distinct tastes of each drink. The concept appeals to individuals who enjoy variety and often find themselves torn between two options.