Puffy, spongy Guardian Caps could help curb NFL head injuries
Why Irv Smith Jr. Chose Bengals
Puffy, spongy Guardian Caps could help curb NFL head injuries
Guardian Caps: Why some NFL players are wearing them in training camps
Guardian cap' to prevent head injuries mandated for practices, CFL
Guardian Caps - Are the soft-shelled football helmet covers
NFL players wear Guardian Caps to reduce head trauma during
What is a Guardian Cap? Meet the NFL's newest safety measure
Guardian Caps - Are the soft-shelled football helmet covers
What Pros Wear: Guardian Caps What are Those Helmet Covers Being
NFL, NFLPA working hard to improve player safety