TRAIKOS: Why Connor Bedard has a chance at becoming the next Connor McDavid
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
What are Guardian Caps, and why are some NFL players wearing them during training camp?
Justin Fields is the rarest of things: a Bears quarterback worth watching, Chicago Bears
Puffy Guardian Caps Could Reduce NFL Player Concussions
Could Guardian Caps be used during NFL games for player safety?, Pro Football Talk
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
NFL fans blast league over Guardian Caps following Jets HC Robert Saleh's criticism
EXPLAINER: NFL using helmet caps for player safety, research
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Guardian Caps NFL: What player positions are required to wear them?
Could Guardian Caps be used during NFL games for player safety?, Pro Football Talk
It's time the NFL made Guardian Caps mandatory