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.

Unpopular guardian caps could provide false sense of security

Coverage of the NFL in Guardian Caps

VICIS Zero1 top testing helmet NFL

VICIS Zero1 top testing helmet NFL

Here is a closer view of the Lions new alternate helmets and man they are clean.

Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure

First quarterback-specific helmet designed to reduce concussions

VICIS Zero1 top testing helmet NFL

Eagles players on Guardian Caps: 'We look a little goofy,' but all

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

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

Coverage of the NFL in Guardian Caps