Jukestir

Jukestir is powerful fitness tool that strengthens your brain and builds coordination through unpredictable movement.  It was designed by Police, Military, Martial Arts, Fitness, Physical Therapy, and Education experts.  Jukestir is the product of thousands of hours of research, testing, and development. It was awarded US Patent 8,273,000 (other patents are pending).
http://www.jukestir.com