These are earhook sport style headphones with hands-free mic should you wish to chat on your IPhone whilst out running (!) I use an IPod Touch or Nano whilst jogging and get annoyed by my earphones falling out or cable pulling, so I was eager to try these. Unfortunately the best I can say is 'they're okay, but overpriced'.
(Being an Android phone user, I can't comment on how well these headphones work with an IPhone, only MP3.)
The in-ear phones were a good shape and only loosened a little over a half hour jog. The plastic surrounds are very light, well shaped, and didn't result in any chaffing or soreness. One 60cm cable was a good length to avoid flapping cable (I wear the IPod on my upper arm). Connecting the two cables to make the full 120cm didn't result in any degradation of the audio quality. The remote audio control (AKA volume button) worked fine, but did weigh the cable down a little causing `cable swing' for more intense running.
Being able to rinse the whole earhook, including in-ear parts, under a tap was nice, but probably no improvement on just using an antibacterial wipe.
The real downside for me was the audio quality. These earhooks are advertised as having "bass pumping stereo sound", but it feels like the Philips wanted the audio experience of a 17 year old's first car stereo. The bass was definitely a bit higher, but the treble was quite shrill and unpleasant. Yes you can hear the bass, but the overall music quality was pretty ropey and empty for a £30 pair of headphones.
In short, stable fit, remote audio a bit heavy whilst running, sound quality disappointing. So perhaps a little overpriced for what you get.