Players Just Wore This Startup's New Soft Helmets in an NFL Preseason Game
New Football Helmet Could Save the Sport
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
NFL safety: How VICIS' position-specific helmets have become all the rage - The Athletic
The NFL's Quest for a Better Football Helmet - Sports Illustrated
NFL to prohibit use of certain helmets for the first time, NFL
Tracing the Evolution of Player Safety Throughout NFL History, News, Scores, Highlights, Stats, and Rumors
Super Bowl 50: How wearable tech is changing the NFL - Wareable
The Safest Football Helmet Is Not Yet a Hit in the NFL - WSJ