What are Guardian Caps and how are they helping football teams?
High school football teams go soft in the fight against brain injuries
Ban on helmet covers sparks controversy
Why are some Titans players wearing Guardian Caps during training camp?, Titans
Players, coaches react to mandatory use of Guardian Caps
Padded helmet cover shows little protection for football players - Scope
Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
Bombers set to don Guardian Caps” on helmets at training camp
Guardian Caps a fit for Park Wolfpack - Cottage Grove Journal
Unpopular guardian caps could provide false sense of security
NFL players experiment with 'Guardian Caps' to protect heads - The San Diego Union-Tribune
Guardian cap' to prevent head injuries mandated for practices, CFL says