Coverage of the NFL in Guardian Caps
Why Utah players wore Guardian Caps during camp - Deseret News
NFL: Concussions dropped by more than 50% among players who wore
Cowboys seen wearing protective, NFL mandated Guardian Caps at OTAs
NFL training camps: Guardian Cap players are wearing over helmets, why
More padding the issue of concussions and better helmets
NFL executive hints that Guardian Caps could eventually be worn in
Why Did Joe Burrow Have Appendix Surgery?
Puffy, spongy Guardian Caps could help curb NFL head injuries