NFL Mandates Guardian Caps >> Guardian Sports
What are those funny-looking soft caps on NFL helmets during camp?
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
Guardian Caps: NFL requires use of helmet cover at training camps to reduce head injuries
Dr. Allen Sills talks about the NFL's phased approach in returning to facilities
Concussions Dropped More Than 50 Percent for Players Who Wore Guardian Caps, NFL Says, News, Scores, Highlights, Stats, and Rumors
Coverage of the NFL in Guardian Caps
Patriots, rest of NFL wearing cushioned helmet caps at training camp, per new mandate - CBS Boston
Raiders, other NFL teams wear Guardian Caps for head safety, Raiders News
Notebook Jets HC Robert Saleh Assesses the Guardian Helmet
NFL Players Experiment With 'Guardian Caps' to Protect Heads – NBC Connecticut