what does pollard wear around his neck

Tony Pollard wears a medical device around his neck called the Q collar. The Q collar is a small, lightweight necklace-type device that applies slight pressure to the wearers internal jugular vein. By doing so, it increases blood volume in the brains venous structures, reducing the harmful internal movement that causes brain injury. The device is designed to help prevent head injuries such as concussions. Tony Pollard wears the Q collar to help protect himself from the big impacts that football players take, especially as a running back.