SAFR Helmet Cover vs Guardian – SAFR Sports
SAFR Sports Chester Springs PA
Guardian Caps, a soft-shell helmet cover, among CFL's new player-safety initiatives
SAFR Sports – Safer through Science
About SAFR Sports – SAFR Sports
SAFR Heroes – SAFR Sports
SAFR Helmet Cover vs Guardian Cap
This Helmet Will Save Football. Actually, Probably Not. - The New York Times
Football Helmet Shell Add-On Testing
SAFR Helmet Cover vs Guardian Cap
SAFR Heroes – SAFR Sports
Football Helmet Shell Add-On Testing