NFL's use of Guardian padded helmet caps in camp draws support and
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Padded helmet cover shows little protection for football players
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Guardian cap' to prevent head injuries mandated for practices, CFL
Badgers wearing Guardian Caps to limit concussions during practice
In fall camp, Montana State using Guardian Caps for safety
Utah Utes football adds new concussion-reducing helmets for fall camp
As NFL mandates Guardian caps in practice, area high school
Guardian Caps - Are the soft-shelled football helmet covers