The Guardian Cap is an example of the NFL's continued work to foster innovation that leads to better, safer protective equipment for…
NFL says positions wearing Guardian Caps saw 52% decrease in concussions - NBC Sports
The impact of 'Guardian Caps' on player safety
Guardian Caps The Rundown
Ohio State Aiming To Reduce Head Injuries With Guardian Caps - Sports Illustrated Ohio State Buckeyes News, Analysis and More
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
If a player wanted to wear a Guardian Cap during a game, the league would prohibit it - NBC Sports
Bellmore-Merrick athletics debuts new guardian caps, Herald Community Newspapers
Guardian Caps Guardian Sports
Guardian Cap Debuts at NFL Training Camps League-wide
Can new technology help cut down on concussions? (video)
NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games
Guardian Cap: What are and why the NFL asks this safety measure in helmets
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
High schools try to cap concussions