Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
Guardian Caps leave some NFL players and coaches with concerns: 'You feel like a bobblehead'
NY Daily News Sports on Twitter: They're called Guardian Caps, and they're now mandatory for all 32 NFL teams through the second preseason game — the time when the league says head
The story behind those soft-shell puffy Guardian Caps players have been wearing
NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games
NFL exec suggests Guardian Caps worn to protect players during practices could one day debut in games
NFL players wear Guardian Caps to reduce head trauma during training camp