Light helmet design's effectiveness pits company versus NFL, NFLPA and their testing - The Athletic
Football Helmet Testing, Technology and Safety Research
How New Helmet Technology Will Make the NFL and NHL Safer, News, Scores, Highlights, Stats, and Rumors
Pinkbike Poll: Why Don't We Wear Full-Face Helmets More Often? - Pinkbike
Study questions effectiveness of new football helmet technology for young athletes - WHYY
Xenith Unveils Shadow XR, a New Football Helmet Made With UK's Rheon
Football helmet - Wikipedia
New Football Helmet Could Save the Sport
Even Young Athletes Are at Risk for CTE - The Good Men Project