[hdctambien]

Here's an article from 6 months ago about new helmet technology.

http://www.foxnews.com/tech/2017/08/08/revolutionary-new-zer...

[kbouck]

> "The outermost layer deforms like a car bumper, yielding when it's hit and slowing impact forces."

The helmets would need frequent changing, or else they might look like demolition derby cars by halftime.