Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Florio PFT] The Guardian Cap apparently works. But if a player asks to wear it in a game, the league would say no. : r/nfl
NFL 2023 Season Guardian Caps Mandate Supported By 52% Concussion Drop – Sports Techie
Why Alabama football players are wearing padded helmets in practice
SI] When Helmet Safety Meets Capitalism : r/CFB
Guardian Caps: Why some NFL players are wearing them in training camps
Parents, players try to make sense of helmet products
Guardian cap' to prevent head injuries mandated for practices, CFL says
SBJ Closing Bell: NFL makes ambitious direct-to-consumer move
Guardian Caps debut at training camps throughout NFL
Quarterback-specific helmet to be available during 2023 NFL season