NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
NFL hopes to reduce head injuries with helmet experiment
NFL 2023 Season Guardian Caps Mandate Supported By 52% Concussion Drop – Sports Techie
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Guardian Caps debut at NFL training camps around the league
NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
NFL Training Camp: 12 photos of players wearing the new Guardian Caps
Reduces impact up to 33% One size fits all Insulates in hot & cold weather
Guardian Protective Helmet Cover
Steelers linebacker speaks cautiously, but he's clearly not a fan of NFL's protective Guardian Caps
Guardian Caps Guardian Sports