It's a good size!!
In my opinion, they are soft, it seems they can lose their shape faster than the ear pads from dt770. The material that is worn on the jar is thinner than in the dt770.
HD660PRO ear pads, I put on the Superlux hd681, this greatly increases comfort. I hate leatherette.
660 more than 681 velor and 681 leatherette.
Since the ear pads are soft, the ear touches the speaker, but I inserted small pieces of felt under the rear, inner edge of the ear pads and it turned out tighter at the back and the ear stopped touching the speaker.
It fits well on the Dt 770. In my opinion it does not spoil the sound. And the top seems less poisonous.