Helps to reduce the vibrations that travel through the cord and into the earbuds.
Personal opinion: It’s more comfortable for extended periods of time, and helps to keep the ear buds secure in your ears when walking around.
i honest to god thought “but won’t the music be upside down?”
this is a great guide, because was wearing my headsets by the left example and it fucking hurt, my ears bruised up and it was really hard to keep them in until i turned them upside down, now it doesn’t hurt at all.