These are good for sound quality and anything else apart from the fact that they stopped working a couple of months after getting them. They seemed like they would be very durable when i got them with the material around the wire but something must have given cos the right ear stopped working unless i fidgeted with the end of the wire. If they hadnt broken they were great fitted nicely around my ears and did me fine, for a while.

I got these to replace a pair of philips over ear headphones which had an awesome sound but only lasted for 3 months, the difference in sound quality was noticeable within seconds, the altecs have a complete lack of bass and sound extremely tinny, the in-line volume control is too sensitive and not gradual enough so I constantly have to go back to using the Ipod volume control which isn't ideal when on a run. The lack of a clip to attach to clothes is also nonsensical in a pair of sport headphones, I usually have to run the cable up through my t-shirt which again makes the volume control defunct as it's not possible to reach whilst in motion. Can't complain too much for £7.99 but definitely would have felt ripped off if paying any more.

Bought these as I was fed up with my ipod headphones continually falling out whilst cycling. Stay in the ear well when going over rough terrain, fit well although as a glasses wearer it took a bit of adjustment to get the fit right over the ear.
Good sound although could do with a bit more bass, let enough external noise through to keep you safe in traffic etc.
Have worn them off the bike a few times, and may be a bit cumbersome for some, feels a bit like you are wearing a hearing aid.

All in all for sport, running, cycling etc a good purchase.