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Q-Collar: New equipment helps protect the brain of high contact sports players
Brain-Protecting Q-Collar Technology Spreads Through Sports World
What do NFL players wear around their neck? Does the Q-collar really work? - AS USA
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
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Q-Collar: Helps Protect Athletes From Brain Injury