Haha, what about the extension weighing down the cord like one reviewew said? Does it really tug the phones? I like to keep my mp3 player in my pocket so it looks like I'd have to use it with these. Everything else about them seems nice though.
Awesome sound, really. If you are not doing any high impact activity, these will stay in your ear for sure. They also block out outside sound very well.
The only issue is this:
Headphones come with an extension piece. Without this extension, the headphones measure 16 inches, basically unusable. When you connect them to the extension (so you can wear the audio source in your pocket or whatever) where the male and female connection is made it becomes heavy, and wildly bounces around, making running basically impossible cause the cable is pulling at your ears due to the weight. Basically, they are AWSOME for weightlifting or low impact aerobics. On the treadmill, I had to hold the connection point in my hand the entire time so the headphones would not come out of my ear. Quite annoying. If they fix this issue, these are one awesome pair of headphones.