i bought these headphones at the airport before going away because my other ones had broke. because of the good name the sony brand has i felt that 30 was a small price to pay because i was sure they would be good. i was not wrong, the sound quality was brilliant however the positives just about stop there, i had a lot of trouble getting them to stay in my ear. i do not have very large ears however i could not seem to get them in right without them falling out. if i was listening to my music and was walking at a pace, out they would come. there was no chance i could go for a run with them in they just would not fit. My friend who has smaller ears than me tried them out and she did not have the same problem so i do suggest these are a very good buy if you have small years because the quality of sound is great however for you who have slightly larger ears you might have difficulty using them.