Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
NFL training camp updates 2022: Lamar Jackson looks sharp, first-rounders make positive strides - ABC7 Chicago
Jets' Robert Saleh is concerned about impact of Guardian Caps on player safety
J.J. Watt is a huge fan of his 'beehive' helmet cover (don't fine him)
The Official Uni Watch 2021 NFL Season Preview - InsideHook
Guardian Caps: What are they and why are NFL players wearing them? - Sactown Sports
NFL 2017 predictions: our writers call the winners, losers and also-rans, NFL
JJ Watt: Cardinals DE Underwent Treatment for Heart Condition - Sports Illustrated