Guardian Cap: What are and why the NFL asks this safety measure in
Guardian Caps', NFL's Most Recent Attempt At Preventing Head Injuries
Reduces impact up to 33% One size fits all Insulates in hot & cold weather Fits both football and lacrosse helmets Connects to the facemask with 4
Guardian Protective Helmet Cover
What are Guardian Caps? NFL players sport specialty helmets for
Puffy, spongy Guardian Caps could help curb NFL head injuries
What Pros Wear: Guardian Caps What are Those Helmet Covers Being
Guardian cap' to prevent head injuries mandated for practices, CFL
What are Guardian Caps and how are they helping football teams?
Guardian Caps, a soft-shell helmet cover, among CFL's new player
Guardian Caps debut at training camps throughout NFL