I have to admit that I be dubious of these when I first see they . ear fin do not seem like they would be comfortable , and I could see how it would be a problem . at first it be a little strange , but after use they for a while I do not even notice the fin anymore . the sound be good for ear bud that be only use to work out , and I actually use they just walk around . the bright yellow be a little intense for my taste , but nobody really seem to notice unless I point it out . these work great for what they be intend for . the extension cable do not degrade the sound enough to matter at all , I actually do not notice any degradation , and since I do not own a ipod shuffle , some of the report problem with that system -lrb- which seem like a design flaw that that product more that this one -rrb- do not exist for I . very happy with this purchase overall . it should be note that those who be worry about different size ear should be able to find something close to they size in the pile of extra that come with this ear bud set . the downside would be that they be not as high perform as some of the other sennheiser audio listen device . this be not all that surprising consider they be not design for in depth listening but be active , and in that they excel . even jump around for four hour strait and slinging heavy box around do not move these out of place . bottom line : highly recommend for work out , but if you want to sit and listen to music I would suggest a different model .