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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Padded Helmet Cover Shows Little Protection For Football
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Tom Brady Tampa Bay Buccaneers Autographed Riddell Speed Authentic Helmet w/Display Case
Padded helmet cover shows little protection for football players - Scope
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SOUTH BEND MEETS THE SOUTH BRONX
Padded Helmet Shell Covers in American Football: A Comprehensive Laboratory Evaluation with Preliminary On-Field Findings
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