Padded helmet cover shows little protection for football players - Scope

A foam cap that fits over football helmets seemed to reduce the force of blows in lab experiments — but not on the field.

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Guardian Caps: Padded Football Helmet Cover – Guardian Sports

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Guardian cap' to prevent head injuries mandated for practices, CFL says

Guardian Caps: Padded Football Helmet Cover – Guardian Sports

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Padded helmet cover shows little protection for football players

Safety Equipment may not Reduce Risk of CTE in Football Players, by Safia Fatima Mohiuddin, Pediatric Concussion Preparedness

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Guardian cap' to prevent head injuries mandated for practices, CFL says

MTSU reduces concussion risk with padded helmet covers

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