NFL hopes to reduce head injuries with helmet experiment
NFL, NFLPA Release 2020 Helmet Laboratory Testing Performance Results
Future of NFL safety: Inside Vicis' high-tech football helmet production facility in Seattle – GeekWire
NFL hopes to reduce head injuries with helmet experiment - Seattle Sports
Video: Meet the Awardees of the NFL Helmet Challenge
NFL teams are using a new, safer helmet — the Vicis Zero1
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
Buckeye Built: Riddell helmets start in North Ridgeville
Cam Rising Will Be Wearing New Technology Helmet In 2022
A football helmet designed just for linemen arrives. Now will it catch on? - The Athletic