Zenergy Pod, Black VinylDetails Zenergy Ball Chairs will enlighten any environment with its fun and spunky attitude, while putting a bounce in the step of ordinary. Designed with a 17" (anti burst) exercise ball, Zenergy allows a little zip in your sit by providing movement that not only helps you sit comfortably, but also helps you concentrate and supports better posture and balance. Movement keeps your mind open, while keeping your body actively engaged, no matter if