Why are coffee mugs bigger on the top?

* Easier to hold: The wider top makes it easier to grasp the mug with your hand, especially when it's full and hot.

* Wider surface area: The wider opening reduces the risk of spills when pouring. It also allows more room for the coffee to cool down before drinking, preventing burns.

* Better aroma: The wider top allows the aroma of the coffee to be released more easily, enhancing the drinking experience.

* More room for cream/milk: If you enjoy adding cream or milk to your coffee, the wider opening provides ample space to do so without overflowing the mug.

Essentially, the design is a result of balancing functionality and aesthetics. The wider top makes the mug more comfortable to hold and use, while still maintaining a pleasing visual appearance.