NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic
What Pros Wear: Guardian Caps What are Those Helmet Covers Being Worn in Practice? - What Pros Wear
Players to watch on Day 5 of Patriots training camp on Monday - Pats Pulpit
Buffalo Bills Accustomed to NFL Mandated Guardian Caps: Controversial Change - Sports Illustrated Buffalo Bills News, Analysis and More
Some Broncos Linemen Appear At Training Camp With Unusual Extra Padding On Outside Of Helmets - CBS Colorado
Guardian Caps debut at training camps throughout NFL
Padded helmet cover shows little protection for football players - Scope
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
8 takeaways from the Patriots' Thursday training camp practice - Pats Pulpit
NFL players wear Guardian Caps to reduce head trauma during training camp
NFL Mandated Guardian Caps: Controversial Change - Sports Illustrated Seattle Seahawks News, Analysis and More
Guardian Caps: Why some NFL players are wearing them in training camps
NFL Training Camp: 12 photos of players wearing the new Guardian Caps
Football helmets are creating more problems than they solve