Portability refers to the design of the headset for easy transportation. This means the space occupied by the headset once folded and the way it can be carried when transported. The choice of earphone box and earphone pouch depends on the earphone manufacturer, so they are not included in this comparison.
From the comparison results:
In-ear headphones and earplugs are the most portable types of headphones. Their small size makes them easy to carry in a pocket or backpack.
On the other hand, although some models can be folded for easy transportation, compared to other designs, over-ear headphones are much larger and take up more space.
On-ear headphones come in different sizes, but they are more compact and easier to carry than over-ear headphones.