to the above, the black gels come with a thin vinyl like skin, acting similarly to what pleather does around memory foam on regular pads, i cant say whether or not they flake over time as i've only had them for a day, but they are crazy comfortable and dont make my ears sweat over time, lol my ears barely touch anything as is, the chamber is that big, it almost feels like the headphones are floating in mid air
maybe if you took them outside on a hot day you might expierence discomfort, but i only plan to listen to these indoors anyway so the its a moot point