I needed a pair of running headphones that sounded good (at least better than the crappy iPod headphones) so I went to circuit city, and bought basically the only non-Sony clip on headphones they had.The clip on mechanism is fine, though the clipping portion becomes sore on my head behind my ears. But they serve the funciton of keeping them on your head well, even though they dont thoroughly push the unit into your ear.I could live with this if not for the fact that the sound reproduction is terrible. No bass, the midrange is extremely scratchy, and I think the uppoer frequencies are way, way too bright. I often pumped the volume to get the bass, but had to bring it back down because the upper frequencies were torturing my ears.I've tried a number of different EQ settings, but I was never satisfied. In the end, if you are looking for some throwaway workout headphones, use these. If you dont want your music mangled, look elsewhere.