40MM Drivers: Large 50mm drivers deliver studio quality audio with a wide, expansive soundstage that puts you in the room with your favorite musicians. Hear music the way the artists, producers, mix and mastering engineers intended. DESIGNED FOR COMFORT: Its over-the-ear design fully encloses ear, offering passive noise cancelling without putting extra pressure on your head. Adjustable headband ensures a snug fit on your head, and clicking ridges allow for full customizability. .