We just don't have it': On matter of helmet safety, money separates local football programs
Riddell Deploys Technology in Pursuit of Safer Head Protection
NFL at 100: Helmets go high tech in quest for player safety
Rio Vista commits to player safety with top-rated helmets, Sports
New NFL Helmet To Come Next Season - Biggest Design Overhaul Since 1960s; Safest On The Market : r/nfl
Talking Helmets With Vicis CEO Dave Marver
NFL Using The VICIS ZERO1 Football Helmet That Morphs On Impact To Reduce Head Injuries
Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
How Riddell is chasing the goal of making the perfect helmet in Des Plaines
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Do NFL players get to choose the helmet they play with, and who covers the cost? - Quora
Three VICIS Helmets Rank Among NFL's Best