The Bose in-ears do not have any noise isolation properties. They are designed to sit in the bowls of your ears, so there isn't any seal to keep out noise. I don't have the se110s, but they will probably do a decent job of keeping out noise. And I don't think you need to wear the cord around the ears. I have a different Shure model, and I've never bothered with that.
which headphones are better considering i need the sound isolating feature for the train ?
i also dont like to wrap the cord around my ears shown in the pic for the se110
do u have to do this?