New devices, practice habits aim to curb concussions in high school football
Concussions among players who wore Guardian Caps over summer dropped more than 50%, NFL says - ESPN
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
NFL hopes to reduce head injuries with helmet experiment
Puffy Guardian Caps Could Reduce NFL Player Concussions
LOOK: NFL unveils quarterback-specific helmet for 2023 season
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Coverage of the NFL in Guardian Caps
Coverage of the NFL in Guardian Caps
NFL hopes to reduce head injuries with helmet experiment
NFL Executive VP: League Saw 52 Percent Decrease In Concussions At Positions Wearing Guardian Caps - Steelers Depot
NFL hopes to reduce head injuries with helmet experiment