What is a Guardian Cap? Meet the NFL's newest safety measure
Padded helmet cover shows little protection for football players - Scope
EXPLAINER: NFL using helmet caps for player safety, research
Guardian Caps: What Are They & How Do They Work?
Bombers welcome introduction of new safety gear – Winnipeg Free Press
PLA donates guardian helmet caps to Onekama football program
Quarterback-specific helmet to be available during 2023 NFL season
EXPLAINER: NFL using helmet caps for player safety, research
How Irish are taking more safety measures when it comes to concussions
Guardian Caps Guardian Sports
NFL expands rule against misuse of helmet; Guardian Caps required in regular season, postseason
Guardian Cap Use a Concern for Watt, Saleh Early in Training Camp - Sports Illustrated
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
These puffy helmet caps are the next big thing in NFL player safety, National Sports