✨It can be used without a cord or with a cord✨ It can be used for adults and children.✨Suitable for boxing, MMA, aerobics and fitness training.✨It can burn calories and fat while exercising your muscles during jumping.✨Lightweight, durable and comfortable handle makes it easy to grasp and carry.✨Dual ball bearing system and slight cable can pass through the air quickly, thus increasing the speed.