I just bought a Bern ski helmet. I think it is has a removable liner, but I can't tell and don't want to break anything trying to figure it out. I couldn't get help in the shop where I bought it as the entire ski-less population was trying rent at the time. It's possible it's not removable, but it sure looks like it is and its an all season, so I think it would have to be. Is anyone familiar with this liner syster and can you tell me how to remove the liner?