Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Size Matters: How to Properly Fit a Football Helmet
The Fruitless Search for a 'Concussion-Proof' Football Helmet - The Atlantic
Getting Used to Your First Football Helmet | SportsEngine
Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
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New Riddell SpeedFlex football helmet pits technology vs. concussions - SBNation.com
Injury-Preventing Football Helmets : high-tech helmet
Football Helmet Misconceptions: Q&A | Concussion.org
How football helmets fail to protect against some of the most dangerous hits in the game - The Verge
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Is it normal for a football helmet to hurt my head since I'm new? - Quora
Expert says better football helmets could make head injury problems worse | ksdk.com
Xenith Recalls Football Helmets Due to Head Injury Hazard
Football helmets are creating more problems than they solve | Sporting News
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Football helmets recalled due to head injury hazard
Riddell Adds Head-Injury Analytics to Smart Helmet
New Smart Helmet Could Spot Concussions in Real Time | Columbia Magazine
Xenith football helmets recalled for head injury hazard
Football helmet impact location, possible factor in mTBI - MEA Forensic
Riddell launches Axiom, latest helmet to combat concussions
With concussions at forefront of minds, helmet designs more important
Urgent next step on football head injuries is a truly comprehensive database
1st Responders to be honored at Saturday's football home opener as Marauders commemorate 20th anniversary of 9/11 - University of Mary Athletics
