First Call: Chase Claypool, Damar Hamlin starting to pop in camps; replay rule change; Guardian Caps in games?
Could Guardian Caps be used in games? - NBC Sports
What is the NFL guardian cap and how does it work? – NBC Sports Bay Area & California
What are Guardian Caps? NFL players sport specialty helmets for 2022 minicamp
2023 Pittsburgh Steelers Official NFL Training 39Thirty Stretch Fit (WHITE LOGO) - Yinzers in the Burgh
Pittsburgh Steelers Players React to New Guardian Helmets - Sports Illustrated Pittsburgh Steelers News, Analysis and More
NFL hopes to reduce head injuries with helmet experiment
Raiders, other NFL teams wear Guardian Caps for head safety, Raiders News
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
The current estimated salary cap for the 2023 Pittsburgh Steelers - Behind the Steel Curtain
More Guardian Caps, And '0' On The Field