NFL commissioner Roger Goodell believes football will become safer
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CFL introduces mandatory extra helmet protection for multiple positions. As well as other new health & safety measures. : r/sports
Guardian Caps leave some NFL players and coaches with concerns: 'You feel like a bobblehead'
NFL hopes to reduce head injuries with helmet experiment
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So what exactly is that black padding on the Syracuse football helmets seen during practice?
Bolingbrook Park District 2014 Summer Guide by Bolingbrook Park District - Issuu
So what exactly is that black padding on the Syracuse football helmets seen during practice?
What are Guardian Caps? NFL's latest padded helmets for added safety
NFL notebook: Ingram getting closer to return
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN