VICIS creates the first football helmet designed specifically to better protect linemen
NFL hopes to reduce head injuries with helmet experiment
Shadow XR Varsity Xenith Football Helmets, Shoulder Pads & Facemasks
NFL to test new helmet designed specifically for linemen - Footballscoop
Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN
What Pros Wear: What Do NFL Offensive Lineman Wear? Here's the Helmets, Cleats and Gloves Worn by NFL Starting OL in 2021 - What Pros Wear
Lucas: Williams refines body and mind while awaiting football's return
Lumberton offensive lineman adapts to playing football with one arm
Kevin Maxen, Jaguars assistant strength coach, comes out as first openly gay male coach in NFL
The N.F.L. Struggles to Tackle Its Latest Problem: Tackling - The New York Times