Seattle-based VICIS unveils new design for football helmets
Vicis unveils revamped high-tech helmet under new ownership following tumultuous startup journey – GeekWire
NFL Helmet Challenge: Increasing player safety, nTop
Tom Brady's helmet model among those banned for 2018 - Sports Illustrated
Everything you need to know about the NFL's helmet guidelines and restrictions - Canal Street Chronicles
Seattle's VICIS is bringing its helmet tech to youth football, forcing teams and parents to confront cost
Helmet market, with deep Detroit ties, in arms race
Vicis lands $15M to boost production of high-tech football helmets and expand beyond gridiron – GeekWire
Why aren't more football players wearing the safest possible helmet?