VICIS and Carbon Combine Technologies to Create Top-Rated Helmets - Carbon
First QB helmet designed to help reduce concussions approved
Steelers QB Kenny Pickett turning to new helmet technology to help avoid further concussions in 2023, National Sports
Design and Virtual Testing of American Football Helmets–A Review
Amid NFL-wide concussion concerns, 2 Bears embrace new kind of helmet - Chicago Sun-Times
Heads up! New helmet getting tryout at NFL minicamps
Dallas-Fort Worth high school helmets and concussions
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
Vicis Zero2 Football Helmet Alabama - Certified 2021
Vicis high-tech helmets take top 3 spots in NFL's annual performance ranking of equipment – GeekWire
How to prevent concussions in football? Better helmets
Why do some helmets on NFL players have a hexagonal cutout on them (and some do not)? - Quora
Helmet Laboratory Testing Performance Results