This might be a dumb question, but why do they wear these extra pads on their helmets for camp but remove them for games? : r/KansasCityChiefs
Guardian Cap Use a Concern for Watt, Saleh Early in Training Camp - Sports Illustrated
Morse says 'Halo' helmets making a difference
Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
BOMBERS ROOKIE DIARY: 'We look like a bunch of aliens out there:'
EXPLAINER: NFL using helmet caps for player safety, research
Coverage of the NFL in Guardian Caps
Steelers QB Kenny Pickett turning to new helmet technology to help avoid further concussions in 2023, National Sports
In fall camp, Montana State using Guardian Caps for safety, preservation of game
Commanders announce training camp schedule
Broncos training camp rewind, Day 1: WR Trinity Benson's two touchdown catches highlight first practice – The Denver Post
NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic