I Think it's Goofy as Shit - Eagles Players Explain the Spaceballs-Looking Helmet Covers - Crossing Broad
NFL hopes to reduce head injuries with helmet experiment
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
'Broadsword Calling Danny Boy': Watching 'Where Eagles Dare': 9781524747572: Dyer, Geoff: Books
Bob Grotz 🇺🇸 on X: Eagles C Jason Kelce makes a statement about the new protective Guardian Caps mandatory for linemen at training camp by wearing bubble wrap atop his. The Guardian
NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
NFL hopes to reduce head injuries with helmet experiment
Guardian cap' to prevent head injuries mandated for practices, CFL says