The story behind those soft-shell puffy Guardian Caps players have been wearing
Packers practice news and notes, 7/26: Recapping Day 1 of training camp - Acme Packing Company
NFL hopes to reduce head injuries with helmet experiment - The Sumter Item
Packers Coach Matt LaFleur Questions Protective Guardian Cap - Sports Illustrated Green Bay Packers News, Analysis and More
Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
Steelers linebacker speaks cautiously, but he's clearly not a fan of NFL's protective Guardian Caps
Inbox: Packers training camp wasn't the same without them
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
Packers Coach Matt LaFleur Questions Protective Guardian Cap - Sports Illustrated Green Bay Packers News, Analysis and More
At training camp, extra helmet padding is designed to reduce head trauma for Commanders players