I was wearing a water sports helmet for IDK how long now. It's a flexible shell with two density protective padding. I got hit by a car and the only comfort I had was my helmet. I suffered no head trauma what-so-ever despite having gone head first into the windshield. It may be excessive but would I do the accident again with a different helmet? I don't think would.

For that matter however I'm starting to consider torso, back, shoulder and hip protection. I obviously won't die from a head injury but the others are dangerously closing in.