Guardian Caps, a soft-shell helmet cover, among CFL's new player-safety initiatives | CBC Sports
What are Guardian Caps and how are they helping football teams?
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets - CBSSports.com
Guardian Caps NFL: What player positions are required to wear them? | Marca
NFL hopes to reduce head injuries with helmet experiment
Football Helmet Shell Add-On Testing
Guardian Cap: What are and why the NFL asks this safety measure in helmets | Marca
Guardian Caps | Guardian Sports
NFL Presents: League-wide Guardian Cap Use to Reduce Head Impacts
Guardian Caps added to help reduce football concussions - The Witmarsum
Guardian Caps (@guardian_caps) • Instagram photos and videos
Guardian Caps added to help reduce football concussions - The Witmarsum
Guardian Cap Use a Concern for Watt, Saleh Early in Training Camp - Sports Illustrated
Ohio State Aiming To Reduce Head Injuries With Guardian Caps - Sports Illustrated Ohio State Buckeyes News, Analysis and More
Guardian Caps: NFL requires use of helmet cover at training camps to reduce head injuries
NFL players don Guardian Caps, designed to protect from concussion
Robert Saleh dislikes the new Guardian Caps: And he has a point
If a player wanted to wear a Guardian Cap during a game, the league would prohibit it - NBC Sports
Guardian cap' to prevent head injuries mandated for practices, CFL says | Globalnews.ca
