Very, very good
Bought these headphones about a month ago. Have had no problems. They are very robust (unlike Seinhisser)...the cord is double-lined with plastic, and the ear plugs themselves are metalic.
The sound quality is great. Although I'm not a huge music boff, I can recommend these for anyone who enjoys listening to music out and about and on the underground etc. The noise reduction is great, and the treble/bass balance is perfect. Their quality is evidenced by me only having to put my volume on my iphone to 1/3 to listen in comfort (unlike 2/3 previously). For 15 pounds they are great value for money.