Coverage of the NFL in Guardian Caps
NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
NFL hopes to reduce head injuries with helmet experiment
What are Guardian Caps? Shadow Hills football using new device to reduce head injuries
High school football teams go soft in the fight against brain injuries
Guardian Caps Guardian Sports
Cowboys seen wearing protective, NFL mandated Guardian Caps at OTAs
NFL training camps: Guardian Cap players are wearing over helmets, why
As NFL mandates Guardian caps in practice, area high school football teams have been using them for years, Sports
[Smith] NFL says positions wearing Guardian Caps saw 52% decrease in concussions : r/nfl
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets