NFL Health and Safety Fact Sheet
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Pickett turning to new helmet tech to help avoid further concussions
NFL expands rule against misuse of helmet; Guardian Caps required in regular season, postseason
New Video Review Data to Help Improve Designs for Protective Equipment
Guardian Cap Results: “Exceeded Our Expectations”
Guardian Cap Debuts at Training Camps League-wide
Guardian Cap Debuts at Training Camps League-wide
Guardian Caps Guardian Sports
4-29-23 Emerald Media Group - Gameday by Emerald Media Group - Issuu
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Executive Hints Guardian Caps Could Eventually Be Worn In Games - RealGM Wiretap
What are Guardian Caps? NFL players sport specialty helmets for 2022 minicamp
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear