Engineered from scratch, not from previous helmets. A reassessment of the problem. Supposed to be much more effective than normal helmets. Outside "crumple zones" diminish impact issues.
At just before the 4 minute mark, they show a comparison of two helmets taking a hit...theirs, and their more normal competitor's model.
Link: http://www.foxnews.com/tech/2017/08/08/revolutionary-new-zero1-football-helmet-may-help-nfl-players-reduce-concussions.html
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