Horrible design! With a name like 'Body Glove' you would think they would have the ergonomic thing down! I was extremely dissapointed in the simple fact that the earbud constantly falls out of my ear when I'm talking!This unit is too heavy and way too big to fit in my ear. I don't think my ears are particularly small, as I used and loved JABRA's earbud with the medium sized gel. I am certain nodoby's ears are perfectly round like the speaker end of this unit. It sounds okay when if you can get it in your ear, but still twists around and falls out because of its own weight. And the 'auto answer' switch does not work with all phones. I am shocked that a design this bad would make it to market.