Large Bubble Helmets Are Guardian Caps, NFL's New Safety Measure
New football helmets could limit brain injuries
Football helmets are creating more problems than they solve
3 Ingenious innovations from the NFL's Helmet Challenge
NFL hopes to reduce head injuries with helmet experiment
Vicis reveals price, more details about high-tech football helmet that reduces brain trauma – GeekWire
Study: Commonly Used Football Helmets Do Little To Protect Against Traumatic Brain Injuries - CBS Philadelphia
How This New Football Helmet Is Designed To Protect The Brain
The 'ZERO1' Morphing Football Helmet Is Being Used by the NFL
The NFL's Helmet Tests Are Brainless
New Riddell SpeedFlex football helmet pits technology vs. concussions
Daily Loud on X: A new carbon-fiber football helmet design could protect players from concussions that can lead to severe brain injuries. / X
Area briefs: Limestone reveals football helmet design