By Fatma Younis
Arizona Cardinals left tackle Jayden Williams is among a growing number of NFL players wearing Guardian Caps during games in the 2026 season. The soft helmet cover is designed to mitigate head injuries, and players like Williams see little downside.
Roughly 20 to 25 players have opted to wear the caps in games this season. The league mandated the caps for most players during contact practices starting in 2022, but game use remains optional.
Debate Over Effectiveness
Chris Nowinski, CEO of the Concussion & CTE Foundation, argues the NFL is overselling the caps' benefits. He says laboratory results show only modest force reduction and that the caps have not been proven to reduce concussions or CTE rates.
Dr. Allen Sills, the NFL's chief medical officer, describes the cap as "a tool in our toolbox" rather than a panacea. He notes the league initially introduced the caps to reduce repetitive head impacts, not specifically concussions.
Research Findings
A 2025 study published in the American Journal of Sports Medicine found required use of the Guardian Cap NXT model was associated with a 54% to 62% reduction in practice concussions, though the reduction could not be attributed solely to the cap's energy-absorbing effects.
Player Perspectives
Younger players, including Pittsburgh Steelers rookie wide receiver Germie Bernard, say they wear the cap because it can only help. Bernard said family and his girlfriend encouraged the extra protection for long-term health.
High-profile players such as New Orleans Saints receiver Chris Olave and New England Patriots receiver Romeo Doubs also wear the caps. Doubs, a brand ambassador, hopes the caps become standard in youth football.
Concerns About False Security
Nowinski warns the caps may give parents and athletes a false sense of security. He notes the NFL version differs from models used in youth programs, and a University of Wisconsin study found the youth model did not reduce concussions in high school practices.
Guardian Sports acknowledges its products cannot eliminate concussion risk. The company states researchers have not agreed on how impact test results relate to actual injuries.
