Puffy, spongy Guardian Caps could help curb NFL head injuries
First QB helmet designed to help reduce concussions approved
First QB helmet designed to help reduce concussions approved
Football helmet design can lower concussion risk, study finds
First QB helmet designed to help reduce concussions approved
Flexible NFL helmet aims to reduce head injuries
NFL players don Guardian Caps, designed to protect from concussion
New helmet could offer Dolphins' Tua Tagovailoa concussion protection
First QB helmet designed to help reduce concussions approved
First QB helmet designed to help reduce concussions OK'd - TheGrio