Guardian Caps Guardian Sports
High school football teams go soft in the fight against brain injuries
NFL hopes to reduce head injuries with helmet experiment
NFL training camps: Guardian Cap players are wearing over helmets, why
NFL Releases Concussion Data After Use of 'Guardian Caps' During Offseason - Sports Illustrated
NFL players wear Guardian Caps to reduce head trauma during training camp
What are Guardian Caps? Shadow Hills football using new device to reduce head injuries
For Giants and the NFL, it's the Summer of Guardian Caps - Newsday
Coverage of the NFL in Guardian Caps