Tua's helmet (description in post) : r/miamidolphins
Virginia Tech 5-Star helmet; ranked 1st among 31 helmets tested with a 0.19 score (Average 5-Star youth helmet: 2.82 – lower score indicates better
The VICIS ZERO1: Engineering a Safer Football Helmet - GrabCAD Blog
Kansas City Chiefs' Alex Smith Wears Vicis Helmet And For Good Reason
NFL helmet safety testing results: Vicis ranks first again for its high-tech head protector – GeekWire
NFL, NFLPA approve helmet designed to reduce QB concussions - ESPN
Helmet safety: Inside the complicated equipment industry - Sports Illustrated
VICIS has top four helmets in impact testing by NFL, NFLPA
Development and Evaluation of a Test Method for Assessing the Performance of American Football Helmets
NFL & NCAA teams to equip players with VICIS helmets
NFL at 100: Helmets go high tech in quest for player safety