Quarterback-specific helmet to be available during 2023 NFL season
Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
Guardian Cap: What are and why the NFL asks this safety measure in helmets
Arizona Cardinals defensive end J.J. Watt not fan of the new league-mandated Guardian Caps on helmets
Guardian Caps: What Are They & How Do They Work?
Guardian Cap debuts during minicamps in effort to reduce avoidable head contact
NFL Presents: League-wide Guardian Cap Use to Reduce Head Impacts
Parents, players try to make sense of helmet products
Padded helmet cover shows little protection for football players - Scope