NFL Executive VP: League Saw 52 Percent Decrease In Concussions At Positions Wearing Guardian Caps - Steelers Depot
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Browns wearing Guardian Caps during training camp
NFL hopes to reduce head injuries with helmet experiment
NFL training camps: Guardian Cap players are wearing over helmets, why
Padded helmet cover shows little protection for football players - Scope
NFL players experiment with 'Guardian Caps' to protect heads
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
NFL says Guardian Caps reduced concussions by more than 50%
Giants react to NFL's new 'Guardian Caps' at training camps - Big Blue View
Concussions Dropped More Than 50 Percent for Players Who Wore Guardian Caps, NFL Says, News, Scores, Highlights, Stats, and Rumors
FOOTBALL: NFL following Sequim's lead with protective caps