NFL's use of Guardian padded helmet caps in camp draws support and

Some think the extra layer makes a positive difference while others believe it could have a negative effect.

Guardian Cap Debuts at Training Camps League-wide

Guardian Caps: Why Some NFL Players Are Wearing Them In, 52% OFF

What are Guardian Caps? NFL's latest padded helmets for added safety

NFL training camps: Guardian Cap players are wearing over helmets, why

Jason Kelce - NFL Center - News, Stats, Bio and more - The Athletic

Padded helmet cover shows little protection for football players

High school football looks to Guardian Cap for head safety – The

NFL report: concussions dropped 50 PERCENT when players wore new

Padded helmet cover shows little protection for football players

Coverage of the NFL in Guardian Caps

What are Guardian Caps? NFL's latest padded helmets for added safety