What are the collars NFL players are wearing in their necks? - AS USA
Q-Collar: A New Way to Play Safer
A collar might help prevent concussions in sports like soccer: Study - ABC News
Q-Collar device to help prevent concussion worn at World Cup
Tony Pollard Interview: His Approach and Why He Wears The Q-Collar
Will This Device Protect Athletes' Brains, or Only Make Them Think It Does? - The New York Times
Q-Collar: Helps Protect Athletes From Brain Injury
Sorry if this has already been answered, but what are these collar things that I see in a couple of the guy's necks? : r/nfl
Ex-NFL star Vernon Davis advocates for athletes to use Q-Collar: 'It's a way to keep everyone safe'
Will This Device Protect Athletes' Brains, or Only Make Them Think It Does? - The New York Times
Q-Collar: Helps Protect Athletes From Brain Injury
What is the anti-concussion Q-Collar worn by players at the Women's World Cup?
Ex-NFL star Vernon Davis advocates for athletes to use Q-Collar: 'It's a way to keep everyone safe'