Guardian Caps, a soft-shell helmet cover, among CFL's new player-safety initiatives
Tennessee Football: UT Vols Use Guardian Helmet Covers
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
NFL Presents: League-wide Guardian Cap Use to Reduce Head Impacts
Guardian Cap Use a Concern for Watt, Saleh Early in Training Camp - Sports Illustrated
The safety story behind the unusual helmets NFL players are wearing this summer - OHS Canada MagazineOHS Canada Magazine
Thoughts on Guardian Caps for Concussion Prevention - Smith Physical Therapy & Running Academy
Guardian cap' to prevent head injuries mandated for practices, CFL says
CFL players adjust to their bigger heads, helmet covers worn in practice
Guardian cap' to prevent head injuries mandated for practices, CFL says
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