EXPLAINER: NFL using helmet caps for player safety, research
Utah Utes football adds new concussion-reducing helmets for fall camp
If a player wanted to wear a Guardian Cap during a game, the league would prohibit it
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
NFL players don Guardian Caps, designed to protect from concussion
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
NFL hopes to reduce head injuries with helmet experiment
NFL on FOX - Guardian caps have significantly helped with the players health and safety during training camp this season. 🙏
NFL medical director wants better solutions to concussion cases
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
FOOTBALL: Guardian Caps gaining ground as concussion-prevention aid