Chiefs TE Travis Kelce thinks NFL's mandated 'Guardian Caps' are silly
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear
From Head To Toe And More - Mississippi State
Jake Hanson on LinkedIn: NFL mandates special helmets for start of camp
More teams practicing with Guardian Caps, Sports
What are those funny-looking soft caps on NFL helmets during camp?, Sports
EXPLAINER: NFL using helmet caps for player safety, research - The San Diego Union-Tribune
Arizona Cardinals defensive end J.J. Watt not fan of the new league-mandated Guardian Caps on helmets
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
High school football looks to Guardian Cap for head safety