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
A Wearable Collar Is Hoping To Provide A Major Breakthrough In Concussion Prevention Tech
Q-Collar gives Bills linebacker Klein sense of protection
Can the Q-Collar Save Football From Its Concussion Problem? - InsideHook
Carolina Panthers great Luke Kuechly promotes Q-Collar he believes extended his career - ESPN - Carolina Panthers Blog- ESPN
Device to Prevent Athletes' Brain Injury Wins FDA Nod
Q-Collar - Concussion Prevention Device
What Are NFL Players Wearing on Their Necks? Details Inside (EXCLUSIVE)
Redskins Injury Update: Vernon Davis placed in concussion protocol - Hogs Haven
$200 Q-Collar is designed to prevent athlete brain injuries
What is a Q-Collar? Know All About Anti-Concussion Neck Strap Now Being Used by Cricketers
Peyton Football blazes a trail, outfits all its players with Q-Collars believed to reduce risk of brain injury, High School Sports
Q-Collar: New equipment helps protect the brain of high contact sports players