NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
Guardian Caps: The new helmets worn by several NFL teams
NFL notes: Cam Newton looking like his old self at Patriots training camp - Sports Illustrated
Year 3 has begun, and we still don't know what we have in Mac Jones - The Boston Globe
Guardian Caps debut at training camps throughout NFL
Guardian Caps: Why some NFL players are wearing them in training camps
Patriots Training Camp Recap: Trent Brown returns for full pads work - Pats Pulpit
Patriots training camp 2023 preview: Bold predictions, breakout players and cut candidates – Boston Herald
Arizona Cardinals defensive end J.J. Watt not fan of the new league-mandated Guardian Caps on helmets
Patriots to receive a break from the heat
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Why Many Patriots Are Wearing 'Q-Tip' Helmets In Training Camp
NFL permitting players to display social justice messages on helmets this season - The Boston Globe