What Is the Q-Collar, the Band NFL Players Wear Around Their Necks?
Q-Collar gives Bills linebacker Klein sense of protection
Meet the Q-Collar: a brain-protective device being worn in the NFL
Misrepresentation of actual science': Professor skeptical about Q-Collar science
Q-Collar, developed by Westport firm, may give football players additional protection from concussions
What Are NFL Players Wearing on Their Necks? Details Inside (EXCLUSIVE)
World Cup players are wearing devices around their necks to prevent brain injuries. Here's how they're supposed to work.
Concussion prevention: Q-collar can reduce brain injury - Sports Illustrated