The NFL Has Introduced 'Guardian Caps' to Reduce Concussions, and
High school football teams go soft in the fight against brain injuries
Helmets don't eliminate concussions. It's time for the NFL to
Guardian Caps: NFL requires use of helmet cover at training camps
Padded helmet cover shows little protection for football players
What is the Q Collar, the device NFL players are wearing around
NFL hopes to reduce head injuries with helmet experiment – The
What are Guardian Caps and how are they helping football teams?
NFL players don Guardian Caps, designed to protect from concussion
NFL's use of Guardian padded helmet caps in camp draws support and
NFL medical director wants better solutions to concussion cases
NFL introduces Guardian Caps across league to limit number of