Xaverian High in Mass. introduces Guardian Caps for football players
Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
NFL hopes to reduce head injuries with helmet experiment
NFL hopes to reduce head injuries with helmet experiment
What's with padded helmet caps teams are wearing
NFL says positions wearing Guardian Caps saw 52% decrease in concussions - NBC Sports
EXPLAINER: NFL using helmet caps for player safety, research
High school football looks to Guardian Cap for head safety
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
Colleges add Guardian football protective helmet cap - Sports Illustrated