What is the Q Collar, the device NFL players are wearing around
Q-Collar: Helps Protect Athletes From Brain Injury
Two years later, Luke Kuechly still wearing Q-Collar: 'If it's
Will This Device Protect Athletes' Brains, or Only Make Them Think
Q-Collar: Helps Protect Athletes From Brain Injury
Luke Kuechly Wearing A Device To Help Prevent Concussions
$200 Q-Collar is designed to prevent athlete brain injuries
Luke Kuechly wearing experimental neck collar in 2017 - ESPN