Puffy, spongy Guardian Caps could help curb NFL head injuries
NFL says positions wearing Guardian Caps saw 52% decrease in
High school football teams go soft in the fight against brain injuries
What are Guardian Caps? Shadow Hills football using new device to
The story behind those soft-shell puffy Guardian Caps players have
NFL's use of Guardian padded helmet caps in camp draws support and
Guardian Cap debuts during minicamps in effort to reduce avoidable
Guardian Caps - Are the soft-shelled football helmet covers
What are Guardian Caps? NFL's latest padded helmets for added safety
NFL's Guardian Caps leave mixed reviews among teams including Eagles