What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear
Guardian Caps: What are they and why are NFL players wearing them? - Sactown Sports
Frequently Asked Questions
NFL hopes to reduce head injuries with helmet experiment
NFL CMO Dr. Sills on Guardian Caps Mandate >> Guardian Sports
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 debut at training camps throughout NFL
Guardian Caps: NFL requires use of helmet cover at training camps to reduce head injuries
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
Frequently Asked Questions
NFL expands rule against misuse of helmet; Guardian Caps required in regular season, postseason
NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games
EXPLAINER: NFL using helmet caps for player safety, research