EXPLAINER: NFL using helmet caps for player safety, research
NFL 2023 Season Guardian Caps Mandate Supported By 52% Concussion Drop – Sports Techie
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
Park High School football blazes safety trail with Guardian Caps
As NFL mandates Guardian caps in practice, area high school football teams have been using them for years, Sports
$2 Million in NFL Funding Now Available to Help Innovators Create a New, Top-Performing Football Helmet for Submission to the NFL Helmet Challenge
PLA donates guardian helmet caps to Onekama football program
New Football Helmet Could Save the Sport
EXPLAINER: NFL using helmet caps for player safety, research
NFL 2023 Season Guardian Caps Mandate Supported By 52% Concussion Drop – Sports Techie