I mean it doesn't bother the people around me, but if you want better isolation I'd take a look at the HD280.All in all, it is a good, comfortable headphone, but I suggest you try it first to make you like the Sennheiser sound signature

The isolation is not ideal, if I have the volume at a moderate level the person next to me would hear whatever I'm listening to

It gives me the sound signature I like, but also does not let much sound leak out t bother those around me.