Helmets don't eliminate concussions. It's time for the NFL to ditch them, NFL
14 Broncos players to participate in the NFL's international helmet decal initiative in Weeks 4 and 5
Helmets go high tech in quest for NFL player safety
Miami Dolphins QB Tua Tagovailoa trying new helmet to combat concussions
New helmet design can deal with sports' twists and turns
Three VICIS Helmets Rank Among NFL's Best
VICIS creates the first football helmet designed specifically to better protect linemen
A football helmet designed just for linemen arrives. Now will it catch on? - The Athletic
NFL Enters Next Era of Helmet Safety with Advent of Quarterback-Specific Helmet
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
X2E+ Varsity Xenith Football Helmets, Shoulder Pads & Facemasks
For Various Reasons, N.F.L. Players Do Not Wear Cups - The New York Times
Everything you need to know about the NFL's helmet guidelines and restrictions - Canal Street Chronicles
NFL to test new position-specific helmet designed for linemen - ESPN