NFL introduces Guardian Caps across league to limit number of brain injuries in preseason
Guardian Sports - The Science Behind The Guardian Cap
NFL says positions wearing Guardian Caps saw 52% decrease in concussions - NBC Sports
The Guardian Cap is a soft-shell padded helmet cover that augments any existing helmet to make it flexible and soft, able to more effectively manage
Football Guardian Caps XT (Current Model)
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Robert Saleh dislikes the new Guardian Caps: And he has a point
Guardian Caps The Rundown
The NFL Has Introduced 'Guardian Caps' to Reduce Concussions, and Made Them Mandatory. But Only for Some Positions. And Only Through the 2nd Preseason Game.