NFL players wear Guardian Caps to reduce head trauma during training camp
Padded helmet cover shows little protection for football players - Scope
Park High School football blazes safety trail with Guardian Caps
Park High School football blazes safety trail with Guardian Caps
As NFL mandates Guardian caps in practice, area high school football teams have been using them for years, Sports
As NFL mandates Guardian caps in practice, area high school football teams have been using them for years, Sports
Guardian Cap debuts during minicamps in effort to reduce avoidable head contact
Guardian Caps debut at training camps throughout NFL
Manatee County School District emphasizes security for games
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Guardian cap' to prevent head injuries mandated for practices, CFL says
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
New Football Helmet Could Save the Sport
Football Gameday Information – UK Athletics
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear