Hard-to-see experimental device Luke Kuechly wears on field might
Luke Kuechly wearing experimental neck collar in 2017 - ESPN
What do NFL players wear around their neck? Does the Q-collar
After NFL and FIFA WWC, player spotted wearing Q-collar in Hundred
Meet the Q-Collar: a brain-protective device being worn in the NFL
Brain-Protecting Q-Collar Technology Spreads Through Sports World
Could experimental device protect Luke Kuechly from concussions
Q-Collar, developed by Westport firm, may give football players
Q-Collar device to help prevent concussion worn at World Cup
Q-Collar Provides Head Protection - ASME
Hard-to-see experimental device Luke Kuechly wears on field might
Here's why NFL players are wearing these Collars around their neck
I Wanted to Protect Myself': How a New Medical Device Plans to
Why NFL Players Wear Collars: Explained – vIQtory Sports