Catapult One is a sports tracker that uses a small pod inserted into the back of a vest to track athletes during practices and games. Is typically used for soccer players but can be worn for football, rugby, tennis, lacrosse, hockey, etc. When paired with the Catapult One App, Catapult shows your sports statistics in real time, such as maximum speed, distance traveled, average location on the field, and more. Used by top athletes to increase sports performance. This vest is a size Adult XS. It has been worn but is in like new condition. Includes: Vest, tracking pod, charger for pod, travel case, and original box (all pictured)