This pair comes with three different sizes of the soft silicon that fits around the driver cylinder... tiny, medium and how-the-hell-do-you-fit-that-in-your-ear. I've been using the medium sized ones since i got them, but recently switched to the small ones after noticing that wearing them for 6 hours straight at work sort of made my ear itch, and they haven't bothered me since. Maybe i just shouldn't wear them that long =]. But... that's why i like these so much. In addition to the great sound... they are VERY comfortable. You forget you're wearing them after a while, which was their main selling point to me after wearing various HUGE studio sized headphones and a multitude of earbuds and earclips that i couldn't stand wearing for more than 5 minutes.