High school football teams go soft in the fight against brain injuries
NFL hopes to reduce head injuries with helmet experiment
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Youth football team first in NKY to use impact-reduction helmets to help protect athletes
NFL 2023 Season Guardian Caps Mandate Supported By 52% Concussion Drop – Sports Techie
MTSU reduces concussion risk with padded helmet covers
Xaverian High in Mass. introduces Guardian Caps for football players
Bellmore-Merrick athletics debuts new guardian caps, Herald Community Newspapers