I buy a few earphone , and I have to say these be one of the better one . the ipod earphone be horrible ... and they really hurt my ear . I be surprise when I get these because I could actually hear the bass ! they cancel other noise really well , and it be cheap . I mean for it be price I must say I be very impress . Great for run , however I think these be yellow ... but they be green . : -lrb-