Designed with an (anti-burst) exercise ball, provides movement that not only helps you sit comfortably, but also helps you concentrate and supports better posture and balance. It’s like using an exercise ball, but with the added benefit of the chair being stationary, so it won’t roll away when you’re trying to take a seat. Use Zenergy as a complementary chair to your everyday task seating. 23” high. Four powder coated legs. Pump included. Greenguard Certified.