NFL safety: How VICIS' position-specific helmets have become all the rage - The Athletic
NFL, NFLPA Rank VICIS, Schutt, Riddell, Xenith Helmets in Top 10 of Lab Tests
NFL at 100: Helmets go high tech in quest for player safety – Twin Cities
Vicis Helmet Nabs Top Ranking Spot After NFL/NFLPA Concussion Safety Tests
Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
Maryville football gears up, Features
The Football Helmet Just Got the Biggest Redesign Since the 1960s--and It's Coming to the NFL Next Season
Football Archives - Page 7 of 39 - The Sports Credential
Varsity Football Helmet Ratings