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NFL hopes to reduce head injuries with helmet experiment
CFL introduces mandatory extra helmet protection for multiple positions. As well as other new health & safety measures. : r/sports
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
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Why Alabama football players are wearing padded helmets in practice
CFL introduces mandatory extra helmet protection for multiple positions. As well as other new health & safety measures. : r/sports
Guardian Caps Guardian Sports