what does pollard wear on his neck

Tony Pollard, a running back for the Dallas Cowboys, wears a medical device called the Q collar around his neck. The Q collar is a small, lightweight necklace-type device that applies slight pressure to the wearers internal jugular vein. By applying light pressure to the sides of the neck, the Q-Collar increases blood volume in the brain’s venous structures, reducing the harmful internal movement that causes brain injury. This helps reduce brain injuries such as concussions. According to Pollard, the Q collar gives him a defense that most guys dont have and makes him feel more safe and taken care of when hes on the field.