Coverage of the NFL in Guardian Caps
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
NFL CMO Dr. Sills on Guardian Caps Mandate >> Guardian Sports
Transcript: Fall League Meeting Health and Safety Media Briefing, October 18, 2022
NFL hopes to reduce head injuries with helmet experiment
NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
Guardian Cap Use a Concern for Watt, Saleh Early in Training Camp - Sports Illustrated
Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
Concussions: Can cap keep football players' heads in game? – Orange County Register