What is on Drue Tranquill's neck? Chargers LB spotted wearing Q-Collar to limit head trauma
Q-Collar gives Bills linebacker Klein sense of protection
Hard-to-see experimental device Luke Kuechly wears on field might save his brain
What is a Q-Collar? Know All About Anti-Concussion Neck Strap Now Being Used by Cricketers
What is a Q collar and why do NFL players wear it?
Carolina Panthers great Luke Kuechly promotes Q-Collar he believes extended his career - ESPN - Carolina Panthers Blog- ESPN
Concussion prevention: Q-collar can reduce brain injury - Sports Illustrated
Hard-to-see experimental device Luke Kuechly wears on field might save his brain
Meet the Q-Collar: a brain-protective device being worn in the NFL
Q-Collar device to help prevent concussion worn at World Cup
What are NFL Players Wearing on Their Necks?