Guardian Sports - Guardian Caps Testimonials
What is a Guardian Cap? Meet the NFL's newest safety measure
Can new technology help cut down on concussions? (video)
CFL players adjust to their bigger heads, helmet covers worn in practice
Guardian Cap debuts during minicamps in effort to reduce avoidable head contact
Guardian Caps: Why some NFL players are wearing them in training camps
Guardian Caps Guardian Sports
Bombers welcome introduction of new safety gear – Winnipeg Free Press
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
What is the NFL Guardian Cap? Will it do anything to reduce concussion? — Dr. Mark Heisig
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
Quarterback-specific helmet to be available during 2023 NFL season
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
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