The Cardio Kids Star Walker takes Moonwalker lower body exercise motion one step further by providing an upper body ergometer. This unit will increase heart rate and provides an onboard computer that reads out speed, time, distance, calories and has the ability to monitor heart rate through an ear clip. Tension is adjustable. Shipped freight, fully assembled, sized and proportioned for children. The Star Walker improves coordination, agility, stride length, muscular strength & cardiovascular endurance. Weighs 160 lbs. Recommended for ages 7-12.