When talking on the phone, the person you are speaking with can often not hear you due to a crackling feedback that obscures conversation. Ive used regular headphones to go to sleep before, but always end up yanking them out because my ears get too sore. Sólo son un poco grandes, si eres mujer se te verán muy "salidos". These are my FIRST pair of crocs and I have been extremely reluctant to get a pair due to the fact I didnt want to become one of those croc people. They’re very very cute and my girl will grow into them but she is 18-24 months so I bought 18-24 months and they are definitely too big. It is very durable, and the cutter knobs are solid and slide so smoothly. Really enjoying this. You have to assemble the whole thing which is weird usually I find that products like this are to come assembled. Not like any other fitflop Ive tried. It doesnt have noise cancelling, but if you are listening to it loud enough, it is not easy to hear other sounds.