NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
Guardian Caps are the latest effort to address CTE, football concussion concerns
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Guardian Caps Guardian Sports
Concussions: Can cap keep football players' heads in game? – Orange County Register
Unpopular guardian caps could provide false sense of security
LA Rams to deploy Guardian Cap safety helmets for training camp
The epidemic of concussions in the NFL - The Paisano
Park High School football blazes safety trail with Guardian Caps
Helmets don't eliminate concussions. It's time for the NFL to ditch them, NFL
The Coat of Arms Added Protection or False Security: Football Tests New Guardian Caps to Prevent Concussions
Guardian Caps Debut During NFL Minicamps
Utah Utes football adds new concussion-reducing helmets for fall camp
NFL] When worn, the Guardian Cap results in at least a 10% reduction in severity of impact if one player is wearing it, and at least a 20% reduction in impact if