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: What are and why the NFL asks this safety measure in helmets

NFL expands rule against misuse of helmet; Guardian Caps required in regular season, postseason

Touch Football, Sold As Safer, Now Requires A Helmet The, 58% OFF

Seeking to reduce head contact, NFL mandates use of Guardian Cap helmet for early portion of training camp - ESPN

NFL Guardian (Caps) Of The Preseason Galaxy Safety Impact:, 53% OFF

Why are NFL players wearing padding on helmets at training camp?

NFL's use of Guardian padded helmet caps in camp draws support and skepticism - The Athletic

NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp

Coverage of the NFL in Guardian Caps

Why are NFL players wearing padding on helmets at training camp?

Why are NFL players wearing padding on helmets at training camp?

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Guardian Caps - Are the soft-shelled football helmet covers effective at limiting head injuries? - ESPN

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

NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets , Helmet Padding