This is the best way to massage and strengthen your neck with this neck massage cursion is is simple way to used,requires batteryAaa uper soft neck massage pillow gently massages your neck and shoulders with the touch of a button. The smooth polyester covered pillow is filled with microbeads to provide the ultimate comfort. The U shaped design fits around the neck to give you support while maintaining the beck's natural curvature. Perfect for use on the airplanes, trains, cars and while relaxing at home. Uses 2 "AA" Size Batteries (Not Included)