Guardian Caps Guardian Sports
What are Guardian Caps? NFL's latest padded helmets for added safety
Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
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NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
NFL hopes to reduce head injuries with helmet experiment
These puffy helmet caps are the next big thing in NFL player safety, National Sports
NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games
NFL hopes to reduce head injuries with helmet experiment
Funky-Looking Guardian Caps Rejected by NFL for Regulation Play, OK'd for Practice - Core77
NFL training camps: Guardian Cap players are wearing over helmets, why
Guardian Caps debut at training camps throughout NFL
NFL players wear Guardian Caps to reduce head trauma during training camp