Theyre typically compared to their counterparts the HD 558s. Other reviewers on Amazon as well as on YouTube are describe these as extremely comfortable and I agree. These black perforated ones are comfortable and just as I hoped theyd be. Every two days it would it would run, rain or shine. Well, unfortunately all it did was create numerous uncomfortable nicks in my skin from the metal, to the point that I couldn?t use it anymore because it was too uncomfortable to finish the job! We tested all three on two different phones. By episode 4 I had to stop the melange and end the whole thing. In the pictures in the product listing, the top and bottom parts of the case appear to meet when closed to form a tight seal, even in the center area with the dip. The battery life is phenomenal, and the turn mic up to mute is a nice option. I found them to be a bit small for my taste but i also feel my head is larger than most.