In my left ear I get the ear plugs easily into my right it takes usually 2-3 attempts. They extend introduced a whole corner from where the pressure at the top you have to get used to (fortunately goes fast). The noise insulation is for absolutely great! I've had various manufacturers through, but as good as the original were not by far. Absolute rest (or almost), you can hear muffled sounds, but this will be so also in other products - unless one renounces his head. To introduce I roll it forward between your fingers thin, short Moisten with the tongue (not fully salivate) and quickly insert it into the Gehöhrgang, you always back stretch. I prefer a star off because you are so soft that it is true when the right ear fumbling.